The invention relates to powdered lithium oxide Li2O, which has a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml, a process for its preparation and its use in the preparation of overlithiated metal oxides.
A PROCESS FOR PRODUCING CARBON IMPURITY REDUCED/CARBON IMPURITY FREE LITHIUM SULFIDE, SAID CARBON IMPURITY REDUCED/CARBON IMPURITY FREE LITHIUM SULFIDE, AND ITS USE FOR PRODUCING SOLID-STATE ELECTROLYTES AND SOLID-STATE BATTERIES
The invention relates to a process for the production of lithium sulfide reduced in carbon impurity or free from carbon impurity, in which lithium sulfate and optionally lithium sulfit, lithium disulfate and/or other lithium sulfur oxides, and carbon impurity containing lithium sulfide are treated with hydrogen gas at temperautres in range from 300 to 600°C. The invention further relates to a lithium sulfide producible in this manner, the carbon impurity content of which is less than 2.0 % by weight, based on the weight of the lithium sulfide. This lithium sulfide is used for the production of battery components, preferably solid electrolytes, and solid-state batteries.
222, from a mixture consisting of lithium peroxide and at least one transition metal oxide or a manganese-containing spinel compound in a two-stage calcination process with respect to temperature and atmospheric composition.
A PROCESS FOR PRODUCING CARBON IMPURITY REDUCED/CARBON IMPURITY FREE LITHIUM SULFIDE, SAID CARBON IMPURITY REDUCED/CARBON IMPURITY FREE LITHIUM SULFIDE, AND ITS USE FOR PRODUCING SOLID ELECTROLYTES AND SOLID BATTERIES
The invention relates to a process for the production of lithium sulfide reduced in carbon impurity or free from carbon impurity, in which lithium sulfide containing carbon impurity is treated with hydrogen gas in a temperature range from 450 to 1000 ° C. The invention further relates to a lithium sulfide producible in this manner, the carbon impurity content of which is less than 0.3% by weight based on the weight of the lithium sulfide. This lithium sulfide is used for the production of battery components, preferably solid electrolytes, and solid-state batteries.
A conductive substrate coated with compact lithium is described, wherein the substrate consists of sheet-like metals or sheet-like carbon-based materials, wherein on at least one side of the substrate a 1 to 5000 nm thick lithiophilic interlayer is present which contains or consists of at least one metallic or metalloid element selected from the group Zn, Al, B, Cd, Au, Ag, Si, Pb, Sn, Ge, Ga, In, Mg, Cr, V, Mo, W, Zr, Mn. Also described are processes for producing such a substrate coated with lithium.
C23C 18/08 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of metallic material
C23C 14/00 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
The invention relates to a process for the production of pure lithium oxide and its use, wherein lithium carbonate is reacted with finely divided, elemental carbon in powder form in the temperature range between 600 and 1200° C., wherein the two reactants are intensively premixed prior to the thermolysis process so that the bulk density of the mixture is reduced by at least 5%, preferably by at least 15%.
22O, which has a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml, a process for its preparation and its use in the preparation of overlithiated metal oxides.
The invention relates to powdered lithium oxide Li2O, which has a specific surface area according to BET of at least 5 m2/g and a bulk density of at most 0.3 g/ml, a process for its preparation and its use in the preparation of overlithiated metal oxides.
4+n and n=0-10 are brought into contact with metallic or electronically conductive deposition substrates and the ammonia is removed at temperatures of −100 to 100° C. by overflowing with inert gas or at pressures of 0.001 to 700 mbar, so that the remaining lithium is deposited on the deposition substrate or/and it is doped with lithium or alloyed by it.
C23C 18/08 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of metallic material
+, wherein graphitic material is mixed with silicon powder in a molar ratio of 9:1 to 1:9 and with lithium powder to an amount of the lithium in the composite material in the range of about 10 molar % to 100 molar % of the stochiometrically maximally possible lithium absorption, and to methods for production thereof.
The invention relates to a process for the production of pure lithium oxide and its use, wherein lithium carbonate is reacted with finely divided, elemental carbon in powder form in the temperature range between 600 and 1200 °C, wherein the two reactants are intensively premixed prior to the thermolysis process so that the bulk density of the mixture is reduced by at least 5%, preferably by at least 15%.
The invention relates to a process for the production of pure lithium oxide and its use, wherein lithium carbonate is reacted with finely divided, elemental carbon in powder form in the temperature range between 600 and 1200 °C, wherein the two reactants are intensively premixed prior to the thermolysis process so that the bulk density of the mixture is reduced by at least 5%, preferably by at least 15%.
The invention relates to a process for the production of lithium metal and lithium alloy mouldings, wherein solutions of metallic lithium in ammonia having the composition Li(NH3)4+n and n = 0-10 are brought into contact with metallic or electronically conductive deposition substrates and the ammonia is removed at temperatures of -100 to 100 °C by overflowing with inert gas or at pressures of 0,001 to 700 mbar, so that the remaining lithium is deposited on the deposition substrate or/and it is doped with lithium or alloyed by it.
C23C 18/08 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of metallic material
C23C 18/12 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
14.
PROCESS FOR THE PREPARATION OF LITHIUM METAL AND LITHIUM ALLOY MOULDINGS
34+n4+n and n = 0-10 are brought into contact with metallic or electronically conductive deposition substrates and the ammonia is removed at temperatures of -100 to 100 °C by overflowing with inert gas or at pressures of 0,001 to 700 mbar, so that the remaining lithium is deposited on the deposition substrate or/and it is doped with lithium or alloyed by it.
C23C 18/08 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of metallic material
C23C 18/12 - Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coatingContact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
15.
STABLE ALKALI AMIDE SOLUTIONS AND PROCESSES FOR PREPARING SAME
The object of the invention are solutions of alkali metal amides MNR1R2, wherein M is an alkali metal selected from Li, Na, K, Rb, Cs; R1 and R2 independently of one another are linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together are a cycloalkyl radical, the alkali metal amides being present in methyltetrahydropyran or in a solvent mixture containing methyltetrahydropyran, and processes for their preparation.
2=an alkaline earth element or any mixture thereof, with x=0-4; z=0-2; m=1 or 0; n=1 or 0, where (m+n)=1, a separator, a cathode, containing lithium-insertable compounds selected from metal oxides, lithium metal oxides, lithium oxides and lithium hydroxide and an electrolyte, the electrochemically active component of the composite anode being embedded in a transition metal-containing electronically or mixed-conductive network.
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
17.
Method of producing a rechargeable high-energy battery having an anionically redox-active composite cathode
The invention relates to a method for producing a rechargeable high-energy battery with an anion-redox-active composite cathode containing lithium hydroxide as the electrochemically active component, which is mixed and contacted with electronically or mixed-conductive transition metals and/or transition metal oxides, so that an electronically or mixed-conductive network is formed, this mixture is applied to a current drain, and the composite cathode thus formed is placed in a cell housing together with a separator, a lithium-conductive electrolyte and a lithium-containing anode, so that an electrochemical cell is present and is subjected to at least one initial forming cycle.
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
18.
Organolithium process under continuous flow conditions
The invention relates to methods for CC bond formation using organolithium compounds under continuous flow conditions in a micro or mesoreactor system, wherein an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form a Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic secondary product, the organolithium compound RLi being used as a solution in a hydrocarbon or hydrocarbon mixture and the RLi concentration being at least 3 M, preferably at least 4 M.
C23C 22/73 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
C22C 24/00 - Alloys based on an alkali or an alkaline earth metal
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
2/g. The invention, furthermore, relates to a process for its preparation, wherein in a first step, lithium hydroxide monohydrate is heated in a temperature-controlled unit to a reaction temperature between 150° C. and 450° C. in the absence of air, and an inert gas is passed over or through it, until the residual water of crystallization content of the formed lithium hydroxide is less than 5 wt. % and in a second step, the anhydrous lithium hydroxide formed in the first step is mixed, overflowed or traversed by a gaseous sulfur source from the group consisting of hydrogen sulfide, elemental sulfur, carbon disulfide, mercaptans or sulfur nitrides.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 4/02 - Electrodes composed of, or comprising, active material
22.
Low-viscosity solutions of alkaline-earth metal alkoxides in aprotic solvents, method for the production of same and use for the production of ziegler-natta catalysts
The invention relates to a rechargeable lithium battery comprising: a composite anode (negative electrode) containing, as an electrochemically active component in the composite anode, a metal nitrogen compound of general formulae (I) and/or (II), wherein (I) and (II) are present in any mixing ratio and M2 = an alkaline earth element selected from the group consisting of Mg, Ca, Sr, Ba or any mixture thereof, where x = 0 – 4; z = 0 – 2; m = 1 or 0; n = 1 or 0, where (m + n) = 1, and wherein these correspond to the fully discharged, lithium-poorest charge state of the nitrogen-containing compounds; and a cathode (positive electrode) separated therefrom by a separator, said cathode containing compounds capable of lithium insertion selected from metal oxides, lithium metal oxides, lithium oxides and lithium hydroxide, and containing an aprotic lithium electrolyte, wherein the electrochemically active metal nitrogen compounds of the composite anode are embedded in a transition metal-containing, electronically conductive or mixed conductive network consisting of finely distributed transition metals and/or electronically conductive or mixed conductive interstitial transition-metal compounds, and the weight ratio between the components forming the network and the nitrogen-containing compounds I and/or II is in the range of 1:100 to 1:2.
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
The invention relates to a method of producing a rechargeable high-energy battery having an anionically redox-active composite cathode containing lithium hydroxide as electrochemically active constituent in a form in which it has been mixed and contacted with electronically or mixedly conductive transition metals and/or transition metal oxides, so as to form an electronically or mixedly conductive network, this mixture is applied to an output conductor, and the composite cathode formed in this way is introduced into a cell housing together with a separator, a Li-conductive electrolyte and a lithium-containing anode, so as to give an electrochemical cell, and this is subjected to at least one first forming cycle.
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
H01M 4/50 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0568 - Liquid materials characterised by the solutes
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
26.
STABLE ALKALI AMIDE SOLUTIONS AND PROCESSES FOR PREPARING SAME
The invention relates to solutions of alkali metal amides MNR1R2, wherein M is an alkali metal, selected from Li, Na, K, Rb, Cs; and R1and R2 represent, independently of one another, linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together form a cycloalkyl group, the alkali metal amides being present in methyltetrahydropyrane or in a methyltetrahydropyrane-containing solvent mixture, and to processes for preparing same.
A method for the production of lithium oxide and the use of such lithium oxide is described herein. The method includes reacting lithium carbonate with elemental carbon or a carbon source forming elemental carbon under certain reaction conditions. The reaction may be carried out in containers whose product-contacting surfaces are corrosion resistant to the reactants and products. The lithium oxide obtained according to the method described herein can used for the production of pure lithium hydroxide solutions or for the production of glasses glass ceramics or crystalline ceramics, for example, lithium ion conductive ceramics.
C03C 4/14 - Compositions for glass with special properties for electro-conductive glass
C03C 10/00 - Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
The invention relates to a process for recovering lithium from lithium-sulfur accumulators, wherein the accumulators are discharged, shredded, and pre-cleaned by sieves or screens to separate housing and electricity collector parts, the remaining material is dispersed in an aqueous medium, resulting in formation of a lithium sulfide containing solution from which insoluble components are removed by filtration, and the electrolyte is removed by phase separation, followed by a process for separation of the lithium from the lithium sulfide-containing solution.
The invention relates to methods for forming CC bonds with use of organolithium compounds under continuous flow conditions in a micro or meso reactor system, in which an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form an Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic reaction product. The organolithium compound RLi is used as solution in a hydrocarbon or hydrocarbon mixture, and the RLi concentration is at least 3 M, preferably at least 4 M.
The invention relates to hydrocarbon-soluble halogen or thiolate/magnesium exchange reagents of general formula R1MgR1 1-n(OR3)n · LiOR2 · (1 -n) LiOR3 · aDonor, wherein R1 is a C1-C8 Alkyl and OR2 and OR3 are equal or different and represent primary, secondary or tertiary alkoxide groups having 3 to 18 carbon atoms, wherein R2 and/or R3 can in turn contain an alkoxy substituent OR4, wherein a assumes a value from 0 to 2, n assumes a value from 0 to 1 and the donor is an organic molecule containing at least two nitrogen atoms.
The invention relates to hydrocarbon-soluble halogen or thiolate/magnesium exchange reagents of general formula R1MgR11-n1-n(OR3nn ⋅ LiOR2 ⋅ (1 -n) LiOR3⋅ aDonor, wherein R1is a C1-C8 Alkyl and OR2and OR3are equal or different and represent primary, secondary or tertiary alkoxide groups having 3 to 18 carbon atoms, wherein R2and/or R3can in turn contain an alkoxy substituent OR4, wherein a assumes a value from 0 to 2, n assumes a value from 0 to 1 and the donor is an organic molecule containing at least two nitrogen atoms.
nM (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M- and R=alkyl residue with 2 to 18 C atoms. In the method of this invention, an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.
The invention relates to a method for obtaining caesium from aqueous starting solutions having caesium contents in the range of 50 ppm to 5000 ppm, in which method the caesium ions in the aqueous solution are, in a first step, precipitated as a double salt having divalent cations with the aid of an at least 1.1-times overstoichiometric amount of solutions containing prussiate of potash, in a pH range of 2 to 12 and a temperature range of 10 to 80°C, the divalent cations either already being present in the starting solutions in an amount at least equimolar to the caesium content or being added as a water-soluble salt, and, in a second step, converted back into a water-soluble form by thermal decomposition and, in a third step, separated from the insoluble residues.
4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, at temperatures between 50 and 300° C., preferably above the melting temperature of lithium of 180.5° C., in an organic, inert solvent.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B05D 1/18 - Processes for applying liquids or other fluent materials performed by dipping
35.
HIGHLY REACTIVE, DUST-FREE AND FREE-FLOWING LITHIUM SULPHIDE AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to a highly reactive, highly pure, free-flowing and dust-free lithium sulphide powder having an average particle size between 250 and 1500 N
The invention relates to a new method for producing lithium oxide and the use thereof, wherein lithium carbonate is converted with elementary carbon or a carbon source forming elementary carbon under the reaction conditions in a temperature range from 720 to 1200°C and wherein the conversion takes place largely with the exclusion of oxygen (i.e. in a vacuum or in a gas atmosphere inert with respect to carbon, for example containing N2, Ar or other noble gases) and the conversion is further carried out in containers, the product-contacting surfaces of which are corrosion-resistant with respect to the reactants and products. The lithium oxide obtained according to the method is used either for producing pure lithium hydroxide solutions or for producing glass, glass ceramics or crystal ceramics, for example lithium ion-conducting ceramics.
The invention relates to a new method for producing lithium oxide and the use thereof, wherein lithium carbonate is converted with elementary carbon or a carbon source forming elementary carbon under the reaction conditions in a temperature range from 720 to 1200°C and wherein the conversion takes place largely with the exclusion of oxygen (i.e. in a vacuum or in a gas atmosphere inert with respect to carbon, for example containing N2, Ar or other noble gases) and the conversion is further carried out in containers, the product-contacting surfaces of which are corrosion-resistant with respect to the reactants and products. The lithium oxide obtained according to the method is used either for producing pure lithium hydroxide solutions or for producing glass, glass ceramics or crystal ceramics, for example lithium ion-conducting ceramics.
nM (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M and R=alkyl residue with 2 to 18 C atoms. In the method of this invention, an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.
C23C 22/73 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
C22C 24/00 - Alloys based on an alkali or an alkaline earth metal
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
40.
Low-viscosity solutions of alkaline-earth metal alkoxides in aprotic solvents, method for the production of same and use for the production of Ziegler-Natta catalysts
The present invention relates to magnesium-salt-containing rare earth halide solutions in aprotic polar organic solvents, methods for the production thereof and the use thereof. Solutions of rare earth metal halides SEHah and magnesium salts MA2 of monovalent acids HA in an aprotic organic solvent or solvent mixture are claimed, wherein SE is selected from the group consisting of: Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu and A is selected from the group consisting of: carboxylates, alkoxides, phenoxides, pseudohalides, sulfonates, nitrate, nitrite, perchlorate, chlorate, chloride, bromide, iodide.
Described is a coated, (partly) lithiated graphite powder characterized in that it has been produced in a non-electrochemical process from metallic lithium and graphite in powder form and has been stabilized outside an electrochemical cell by application of a coating layer; and a galvanic cell comprising a cathode, a lithium-conductive electrolyte-separator system and an anode comprising a coated, (partly) lithiated graphite powder, where the (partial) lithiation and the coating of the graphite powder are performed non-electrochemically outside the galvanic cell (ex situ).
The invention relates to a method for producing aprotic solutions that contain zinc bromide and lithium bromide, the reaction of the reactants to the product being carried out as a one-pot reaction.
The invention relates to powdery, highly reactive alkaline and alkaline earth hydride compounds and mixtures with elements of the third main group of the periodic table of elements (PTE), and to the preparation thereof by reacting alkaline or alkaline earth metals in the presence of finely divided metals or compounds of the third main group of the PTE, the latter having one or more hydride ligands or being converted in situ, under the prevailing reaction conditions, i.e. in the presence of hydrogen gas or another H source, to hydride species. The invention also relates to the use thereof for the preparation of complex hydrides and organometallic compounds.
The invention relates to powdery, highly reactive alkaline and alkaline earth hydride compounds and mixtures with elements of the third main group of the periodic table of elements (PTE), and to the preparation thereof by reacting alkaline or alkaline earth metals in the presence of finely divided metals or compounds of the third main group of the PTE, the latter having one or more hydride ligands or being converted in situ, under the prevailing reaction conditions, i.e. in the presence of hydrogen gas or another H source, to hydride species. The invention also relates to the use thereof for the preparation of complex hydrides and organometallic compounds.
The invention relates to a method for producing organometallic compounds RnM (M = alkali or alkaline earth element, R = alkyl residue) where n = valence of the metal M and R = alkyl residue with 2 to 18 C atoms. The present method results in a decrease or in the elimination of the formation of byproducts of little value, such as metal halides and the like, which are typically produced in these reactions. The present method comprises hydrometalating an olefin in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1. The method involves the formation of the reactive metal hydrides in situ.
The invention relates to a method for producing organometallic compounds RMn (M = alkali or an alkaline earth element, R = an alkyl group), where n = valency of the metal M and R = an alkyl group with between 2 and 18 C-atoms, in which method an olefin is hydrometallated in an alkyl methyl ether, or a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source as well as in the presence of a transition metal catalyst, wherein the molar ratio of the alkyl methyl ether to the metal M is at least 0.01 : 1 and a maximum 50 : 1.
y with x=1 or 2 and y=3 or 4, or a compound containing only the elements C, H, and N, and optionally Li, at temperatures in the range between 60 and 300° C., preferably between 100 and 280° C., and particularly preferably above the melting temperature of lithium of 180.5° C., in an inert organic solvent under dispersion conditions or in an atmosphere that contains a gaseous coating agent containing nitrogen.
C01B 21/092 - Compounds containing nitrogen and non-metals containing one or more hydrogen atoms containing also one or more metal atoms
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
+, which has been selected from the group of lithium hydride, lithium amide, lithium imide and tetra-lithium ammonium hydride, is used as a general lithium source.
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
50.
LOW-VISCOSITY SOLUTIONS OF ALKALINE EARTH METAL ALKOXIDES IN APROTIC SOLVENTS, METHOD FOR THE PRODUCTION OF SAME AND USE FOR THE PRODUCTION OF ZIEGLER-NATTA CATALYSTS
The invention relates to concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in a mixture of a metal alkyl compound M(R10R11) in aprotic solvents, where M is an alkaline-earth metal chosen from Mg, Ca, Ba, Sr; OCH2R6 is an alkoxide radical comprising at least 3 and at most 40 carbon atoms having a branch in position 2 in relation to the O function, thus R6 = -CHR12R13 with R12, R13 = mutually independent alkyl radicals C1-C18; R7 is an alkyl radical having 2-15 carbon atoms, which is either linear or has a branch in a position = 3 (in relation to the O function); R8 is an alkyl radical comprising 1 -6 carbon atoms, which is either linear or has a branch in a position = 3 (in relation to the O function); R9 has an alkyl radical with 2-15 carbon atoms, which is either linear or has a branch; R10 and R11 are any alkyl radicals comprising 1-15 carbon atoms, n = an integer from 1 to 4, a + b = 2, wherein a and b can assume values from 0 to 2 and the molar ratio of M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b to M(R10R11) lies from 99.5:0.5 to 60:40.
C08F 4/08 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen of alkali metals
51.
Method for producing low-acid lithium borate salts and mixtures of low-acid lithium borate salts and lithium hydride
The invention relates to a method for the hydrometallurgical recovery of lithium from the lithium manganese oxide-containing fraction of used galvanic cells.
H01M 10/54 - Reclaiming serviceable parts of waste accumulators
54.
GALVANIC CELLS AND (PARTIALLY) LITHIATED LITHIUM BATTERY ANODES WITH INCREASED CAPACITY AND METHODS FOR PRODUCING SYNTHETIC GRAPHITE INTERCALATION COMPOUNDS
The invention relates to a galvanic cell containing a cathode, a lithium-conductive electrolyte separator system, and a synthetic graphite-containing anode. In the manufacture of the cell ( i.e. prior to the first charging cycle), the anode contains or consists of a (partially) lithiated graphite powder which is produced from synthetic graphite and lithium powder in a non-electrochemical manner. The invention also relates to a method for (partially) lithiating synthetic graphite in an electroless manner. The invention is characterized in that the particulate synthetic graphite is (partially) lithiated in an electroless manner after mixing with particulate lithium metal powder and by means of a mixing and/or milling process, thereby forming Li graphite intercalates of the composition LiCx (mit x = 6 600).
Described is a coated, (partly) lithiated graphite powder characterized in that it has been produced in a non-electrochemical process from metallic lithium and graphite in powder form and has been stabilized outside an electrochemical cell by application of a coating layer; and a galvanic cell comprising a cathode, a lithium-conductive electrolyte-separator system and an anode comprising a coated, (partly) lithiated graphite powder, where the (partial) lithiation and the coating of the graphite powder are performed non-electrochemically outside the galvanic cell (ex situ).
The invention relates to a method for producing aprotic solutions that contain zinc bromide and lithium bromide, the reaction of the reactants to the product being carried out as a one-pot reaction.
The invention relates to particulate lithium metal formations with substantially spherical geometry and a core consisting of metallic lithium, coated with an outer passivating yet ionically conductive layer containing nitrogen, as well as to methods for the production of same by reacting lithium metal with one or more passivation agent(s) containing nitrogen selected from the groups N2 NxHy with x = 1 or 2, and y = 3 or 4, or a compound containing only the elements C, H and N as well as, if necessary, Li, at temperatures in the range of between 60 and 300°C, preferably 100-280°C and particularly preferred to be above the lithium melting temperature of 180.5°C, in an organic, inert solvent under dispersion conditions or in an atmosphere that contains a gaseous coating agent containing nitrogen.
A method of producing an active material for batteries comprising providing electrochemically active particles, optionally comminuting the electrochemically active particles, adding an organic carbon compound, optionally in a suitable organic solvent, and mixing, heating the mixture under protective gas to a temperature above the decomposition limit of the organic compound and below the decomposition temperature of the electrochemically active particles, active materials thus obtained and also corresponding applications and uses.
C01B 17/22 - Alkali metal sulfides or polysulfides
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
The invention relates to concentrated low-viscosity solutions of a mixed alkaline earth alkoxide compound of formula M(OCH2R6)2-a-b(OR7)a[O(CHR8)n OR9]b in a mixture with an aluminum compound Al(OCH2R6)3-c-d(OR7)c[O(CHR8)nOR9]d in an aprotic solvent, wherein M is an alkaline earth metal; OCH2R6 is an alkoxide radical of 3 to 40 C atoms, wherein R6 = -CHR10R11 with R10, R11 independently of each other alkyl radicals C1 - C18, R7 is an alkyl radical containing 2-15 C atoms; O(CHR8)n OR9 is an alkoxy radical in which R8 is an alkyl radical containing 1- 6 C atoms; R9 is an alkyl radical containing 2-15 C atoms; n = an integer between 1 and 4; and a+b <= 2, c+d <= 3, a and c are from 0.01 to 0.8; and b and d each range from 0.1 to 1.99. The solution has a content of aluminum relative to the dissolved alkaline earth metal of 0.2 - 20 mol %.
The invention relates to rechargeable, nonaqueous lithium batteries which contain, as active anode material, either lithium metal or a lithium alloy, an active cathode material with a redox potential in the range of between 1.5 and 3.4 V vs. Li/Li+ and lithium rhodanide (LiSCN) as electrolyte component.
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 10/0565 - Polymeric materials, e.g. gel-type or solid-type
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
61.
STABILIZED LITHIUM METAL IMPRESSIONS COATED WITH ALLOY-FORMING ELEMENTS AND METHOD FOR PRODUCTION THEREOF
The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [AR1R2R3R4]Lix (I), or R1R2R3A-O-AR4R5R6 (II), wherein: R1R2R3R4R5R6 = alkyl (C1-C12), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups R1 to R6 can comprise additional functional groups, such as alkoxy groups; A = boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x = 0 or 1 for B, Al, Ga, In, Tl; x = 0 for Si, Ge, Sn, Pb; in the case that x = 0 and A = B, Al, Ga, In, Tl, R4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, at temperatures between 50 and 300°C, preferably above the melting temperature of lithium of 180.5°C, in an organic, inert solvent.
The invention relates to particulate lithium metal composite materials having a layer containing phosphorous and a method for producing said phosphorous-coated lithium metal products, characterized in that melted, droplet-shaped lithium metal is reacted in a hydrocarbon solvent with a phosphorous source that contains the phosphorous in the oxidation stage 3, and use thereof for the pre-lithiation of electrode materials and the production of battery anodes.
C22C 24/00 - Alloys based on an alkali or an alkaline earth metal
C23C 8/40 - Solid state diffusion of only non-metal elements into metallic material surfacesChemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
63.
PROCESS FOR PREPARING METAL DIFLUOROCHELATOBORATES, AND USE AS BATTERY ELECTROLYTES OR ADDITIVES IN ELECTROCHEMICAL CELLS
The invention relates to a process for preparing metal difluorochelatoborates, in which a metal bis(chelato)borate of the formula M[BL2] is reacted with boron trifluoride and a metal fluoride (MF) and/or a metal salt of the chelating ligand (M2L) where M+ is a monovalent cation selected from the group consisting of lithium, sodium, potassium and ammonium NR4 +, where R = H, alkyl (C1 to C8) and L is a chelating agent having two terminal oxygen atoms and having the general formula (II), where: when m = 1 and Y1 and Y2 together with C1 form a carbonyl group, n = 0 or 1 and o = 0 or 1 and R1 and R2 are each, independently of one another, H or alkyl having from one to eight carbon atoms (C1-C8) and Y3, Y4 are each, independently of one another, OR3 (R3 = C1-C8-alkyl), then n or o ? 1: p = 0 or 1 and when n and o = 0, p = 1; or Y1, Y2, Y3, Y4 are each, independently of one another, OR3 (R3 = C1-C8-alkyl), m = 1, n = 0 or 1, o = 1 and p = 0; or C2 and C3 are members of a 5- or 6-membered aromatic or heteroaromatic ring (with N, O or S as heteroelement) which can optionally be substituted by alkyl, alkoxy, carboxy or nitrile, where R1, R2, Y3 and Y4 are absent, m = 0 or in the case of 1, Y1 and Y2 together with C1 form a carbonyl group and p is 0 or 1, in an organic, aprotic solvent.
The invention relates to a particulate lithium metal/lithium sulfide composite material, to a method for producing a Li2SPC-coated lithium metal product, and to the use of said lithium metal product. The particulate lithium metal/lithium sulfide composite material has a core-shell morphology, the shell of which is made of a lithium sulfide containing C and the core of which is made of metal lithium. According to the method, the particulate lithium metal/lithium sulfide composite material is produced by reacting melted, drop-shaped lithium metal in a hydrocarbon solvent with a sulfur source selected from the group CS2, S8, H2S, COS, SO, SO2 or mixtures thereof. The method products according to the invention are used to produce lithium battery electrodes.
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/52 - Removing gases inside the secondary cell, e.g. by absorption
65.
Surface-passivated lithium metal and method for the production thereof
C23C 22/48 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
C23C 22/03 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions containing phosphorus compounds
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
66.
METHOD FOR PRODUCING A CARBON-COATED LITHIUM SULFIDE, AND USE THEREOF
The invention relates to a novel method for producing a carbon-doped lithium sulfide powder, according to which elementary lithium is reacted with elementary sulfur and/or a sulfur-containing compound selected from the group containing CS2, COS, SO2 and SO, in a liquid state, in an aliphatic or cycloaliphatic hydrocarbon solvent. The products of the method according to the invention are used to produce lithium battery electrodes or a lithium-ion-conducting solid.
C01B 17/22 - Alkali metal sulfides or polysulfides
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
67.
STABILIZED, PURE LITHIUM METAL POWDER AND METHOD FOR PRODUCING THE SAME
The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R-COOR', in which R stands for C10-C29 groups and R' for H or C1-C8 groups.
The invention relates to a galvanic element, containing a substantially transition metal-free oxygen-containing conversion electrode, a transition metal-containing cathode, and an aprotic lithium electrolyte. The substantially transition metal-free oxygen-containing conversion electrode materials contain lithium hydroxide and/or lithium peroxide and/or lithium oxide, and in the charged state additionally contain lithium hydride, and are contained in a galvanic element, for example a lithium battery, as the anode. The invention further relates to methods for producing substantially transition metal-free oxygen-containing conversion electrode materials and to galvanic elements comprising substantially transition metal-free oxygen-containing conversion electrode materials.
H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
69.
Method for manufacturing alloy powders based on titanium, zirconium and hafnium, alloyed with the elements Ni, Cu, Ta, W, Re, Os and Ir
B22F 9/20 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds
C01B 6/24 - Hydrides containing at least two metals, e.g. Li(AlH4)Addition complexes thereof
C22B 5/04 - Dry processes by aluminium, other metals, or silicon
A method for manufacturing alloy powders based on titanium, zirconium and hafnium, alloyed with the elements Ni, Cu, Ta, W, Re, Os, and Ir is described in which an oxide of Ti and/or Zr and/or Hf is mixed with a metal powder of the ele-ments named and with a reducing agent, and wherein this mixture is heated in a furnace, optionally under argonate atmosphere or, optionally under hydrogen atmosphere (forming metal hydrides in the process), until the reducing reaction begins, the reaction product is leached and then washed and dried, wherein the oxide used has an average grain size of 0.5 to 20 µm, a specific surface area according to BET of 0.5 20 m2/g and a minimum content of 94 wt.-%. An easy to produce powder, in particular in relation to the ignition point and burning time, is produced.
B22F 9/02 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes
B22F 9/22 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
C01B 6/02 - Hydrides of transition elementsAddition complexes thereof
C01B 6/24 - Hydrides containing at least two metals, e.g. Li(AlH4)Addition complexes thereof
The invention relates to a highly reactive zinc form, to a method for the production thereof, and to the use of said highly reactive zinc form in synthetic chemistry.
The present invention provides an amorphous caesium aluminum fluoride complex, a process for its production and the use of the complex as a flux, in particular for the soft soldering of aluminum.
B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding
B23K 35/36 - Selection of non-metallic compositions, e.g. coatings, fluxesSelection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
73.
AMORPHOUS CAESIUM ALUMINIUM FLUORIDE COMPLEX, ITS PRODUCTION AND USE
The subject matter of the present invention is an amorphous caesium aluminium fluoride complex, a method of producing it and the use of the complex as a flux, in particular for the soft soldering of aluminium.
B23K 35/36 - Selection of non-metallic compositions, e.g. coatings, fluxesSelection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
74.
HIGHLY REACTIVE ZINC FORM, METHOD FOR THE PRODUCTION THEREOF, AND USE OF THE SAME
The invention relates to a highly reactive zinc form, to a method for the production thereof, and to the use of said highly reactive zinc form in synthetic chemistry.
The invention relates to methods for producing caesium hydroxide solutions during which: caesium-containing ore is disintegrated with sulfuric acid while forming a caesium aluminum sulfate hydrate (caesium alum), which is poorly soluble at low temperatures; the formed caesium alum is separated away in the form of a caesium alum solution from the solid ore residues; aluminum is precipitated out of the caesium alum solution while forming a caesium sulfate solution; the formed caesium sulfate solution is reacted with barium hydroxide or strontium hydroxide while forming a caesium hydroxide solution, and; the formed caesium hydroxide solution is concentrated and purified.
C01D 17/00 - Rubidium, caesium, or francium compounds
76.
METHOD FOR THE PRODUCTION OF WATER-FREE RARE EARTH METAL HALOGENIDES, SYNTHESIS MIXTURES CONTAINING WATER-FREE RARE EARTH METAL HALOGENIDES AND USE THEREOF
The invention relates to a method wherein rare earth metal oxides are reacted with halogenation agents of general formula (1), wherein M= Si, Ge, Sn, Ti, Zr, Hf; Hal= CI, Br, I; X1,X2,X3 = independently from each other CI, Br, I, H, alkoxy (-OR), wherein R represents an organo radical having 1-20 atoms, alkyl having 1-20 C atoms or aryl with 6-20 C atoms, wherein the alkyl or arly radicals can include one or several halogen substituents selected from the group of F, CI, Br or I; in an aprotic polar solvent. The invention also relates to synthesis mixtures containing water-free rare earth metal halogenides and the use thereof
A process for preparing a zirconium metal powder, said zirconium metal powder having a burning time of 4 s per 50 cm to 3000 s per 50 cm, a total oxygen content between 0.7 wt. % to 1.6 wt. %, an ignition energy of 1 µJ to 1 mJ, a mean particle size of 1 µm to 8 µm, and an ignition point of 160°C to 400°C and above. This process is comprising the steps of: a) mixing a zirconium oxide with a reducing agent and heating the resulting mixture in an oven at 800°C to 1400°C, until the reduction reaction starts, to obtain a reaction product, b) leaching the reaction product obtained from step a) to obtain a leached product, and then c) washing and drying the leached product obtained from step b) to yield the zirconium metal powder, the zirconium oxide having a mean particle size of 0.5 to 20 µm, a BET specific surface area of 0.5 to 20 m2/g and a minimum content of 94 wt.% zirconium oxide.
B22F 9/20 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds
C01B 6/00 - Hydrides of metalsMonoborane or diboraneAddition complexes thereof
