Abstract

222); and filtering the slurry, thereby generating a cerium depleted mixed rare earth sulfate solution and cerium-rich mixed rare earth solids.

IPC Classes  ?

• C01F 17/10 - Preparation or treatment, e.g. separation or purification
• C01F 17/20 - Compounds containing only rare earth metals as the metal element

Abstract

Mixed rare earth sulfate solutions depleted of cerium may be prepared by mixing a mixed rare earth sulfate solution with a pH adjusting agent comprising a magnesium oxide, and adding a sulfate adjusting agent comprising magnesium sulfate to the mixed rare earth sulfate solution, thereby generating a mixture; adding an oxidizing agent to the mixture thereby generating a slurry comprising insoluble cerium (IV) hydroxide, the oxidizing agent comprising hydrogen peroxide (H2O2); and filtering the slurry, thereby generating a cerium depleted mixed rare earth sulfate solution and cerium-rich mixed rare earth solids.

IPC Classes  ?

• C01F 17/282 - Sulfates
• C22B 3/22 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means
• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• C22B 59/00 - Obtaining rare earth metals

Abstract

The invention relates to a catalyst for the decomposition of ammonia into hydrogen and nitrogen, wherein the catalyst comprises at least ruthenium, mesoporous cerium oxide and at least one oxide selected from among cobalt, nickel and iron oxides, preferably nickel oxide, and to a method for producing hydrogen from ammonia comprising the following steps in this order: activating at least one catalyst according to the invention at a temperature ranging from 300°C to 600°C under a stream of a reducing gas; bringing the activated catalyst into contact with a gas to be treated comprising ammonia at a temperature ranging from 200°C to 800°C, and at a pressure ranging from atmospheric pressure to 100 bar.

IPC Classes  ?

• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• B01J 23/74 - Iron group metals
• B01J 23/755 - Nickel
• B01J 23/83 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups with rare earths or actinides
• B01J 37/02 - Impregnation, coating or precipitation
• B01J 37/08 - Heat treatment
• C01B 3/00 - HydrogenGaseous mixtures containing hydrogenSeparation of hydrogen from mixtures containing itPurification of hydrogen
• C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia
• C01B 21/02 - Preparation of nitrogen

Abstract

Mixed rare earth carbonate may be prepared by mixing a rare earth double sulfate salt solid with a conversion agent comprising a sodium carbonate (Na2CO3) solution, to form a slurry mixture, and generating a low sulfate rare earth carbonate wet cake from the slurry mixture.

IPC Classes  ?

• C01F 17/247 - Carbonates
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus

Abstract

Mixed rare earth carbonate may be prepared by mixing a rare earth double sulfate salt solid with a conversion agent comprising a sodium carbonate (Na2CO3) solution, to form a slurry mixture, and generating a low sulfate rare earth carbonate wet cake from the slurry mixture.

IPC Classes  ?

• C01F 17/247 - Carbonates
• C01F 17/10 - Preparation or treatment, e.g. separation or purification

IPC Classes  ?

• C01F 17/10 - Preparation or treatment, e.g. separation or purification
• C01F 17/247 - Carbonates

Abstract

2/g after calcination at 500° C. for 8 hours.

IPC Classes  ?

• C01F 17/30 - Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6

Abstract

3) solution to form a second mixture, and a lower sulfate rare earth carbonate can be generated from the second mixture.

IPC Classes  ?

• C01F 17/247 - Carbonates
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• C01F 17/00 - Compounds of rare earth metals
• C01F 17/10 - Preparation or treatment, e.g. separation or purification

Abstract

23233) solution to form a second mixture, and a lower sulfate rare earth carbonate can be generated from the second mixture.

IPC Classes  ?

• C07F 5/00 - Compounds containing elements of Groups 3 or 13 of the Periodic Table

Abstract

3) solution to form a second mixture, and a lower sulfate rare earth carbonate can be generated from the second mixture.

IPC Classes  ?

• C01F 17/247 - Carbonates
• B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
• C01F 17/10 - Preparation or treatment, e.g. separation or purification

Abstract

22) and up to about 10 wt. % dopant. Exemplary doped cerium oxide particles may have a BET specific surface area of more than 150 m222/g after calcination at 500 °C for 8 hours.

IPC Classes  ?

• C01F 17/30 - Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
• C01F 17/235 - Cerium oxides or hydroxides
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths

Abstract

2/g after calcination at 500° C. for 8 hours.

IPC Classes  ?

• C01F 17/30 - Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6

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Chemicals and minerals used in industry, science, and research; rare earth elements and rare earth metals of the periodic table, including lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium and all other lanthanide and actinide rare earth elements/metals; all other mined materials in this class being industrial and processed minerals; oxides of the aforementioned, salts of the aforementioned, concentrates of the aforementioned, by-products of the aforementioned. Common metals and their alloys; ores of metal; ferrous and non ferrous metal and ores; aluminium; nickel; copper; tin; iron; zinc; all other mined materials relating to common metals. Advertising; business management; business administration; office functions; business project management services; business research; retail services; wholesale services; personnel management; import-export agency services; provision of supply contracts for the distribution and transmission of mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research; advice, information and consultancy in relation to the foregoing. Construction services; repair, maintenance of industrial apparatus and instruments and installation services; mining services being extraction; quarrying services; mining extraction; building construction; extraction of rare earth elements and rare earth metals and chemicals; machinery installation, maintenance and repair; drilling of wells; mining extraction of mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, concentrates of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research; advice, information and consultancy in relation to the foregoing. Transport; storage; packaging and storage of goods; collection of refuse; collection of waste materials; cargo transportation; delivery of cargo; delivery of goods; disposal (transport) of waste; distribution (transport) of goods; transport brokerage; packaging of goods; distribution of energy; electricity supply services; freight services; warehousing; advice, information and consultancy in relation to the foregoing. Treatment and blending of minerals, ores, concentrates and mineral substances; chemicals and metals processing; treatment of mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research; processing of mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, concentrates of the aforementioned, chemicals used in industry, science, and research; refining, recycling, recovery, purification, treatment and reprocessing services for mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, concentrates of the aforementioned, chemicals used in industry, science, and research; production of energy; advice, information and consultancy in relation to the foregoing. Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services, including for the mining and metallurgical industries; engineering services; exploration services; mining and minerals exploration (prospecting); software as a service; platform as a service; design and development of computer hardware and software; environmental management, protection, conservation and care; quality control and authentication services; quality testing; chemical analysis; chemical research; laboratory services; advice, information and consultancy in relation the foregoing.

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Chemicals used in industry, science, and research; Minerals used in industry, science, and research for industrial and scientific purposes, namely, lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium; rare earth elements and rare earth metals of the periodic table, namely, lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium and all other lanthanide and actinide rare earth elements and metals used for industrial or scientific purposes; mined materials being industrial and processed minerals for industrial and scientific purposes namely, lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium; oxides of the aforementioned, namely, oxides of lanthanum, oxides of cerium, oxides of praeseodymium, oxides of neodymium, oxides of samarium, oxides of europium, oxides of erbium, oxides of ytterbium; industrial salts; mineral concentrates, namely, rare earth elements and rare earth metals, by-products of rare earth elements and rare earth metals, namely, by-products of lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium and all other lanthanide and actinide rare earth elements and metals used for industrial or scientific purposes Common metals and their alloys; ores of metal; ferrous and non-ferrous common metal and ores; aluminum ores and alloys; nickel; copper ores and alloys; tin ores and alloys; iron ores and alloys; zinc ores and alloys; mined materials relating to common metals, namely, industrial metal ores Advertising; business management; business administration; office functions; business project management services; business research; retail store services featuring rare earth metals of the periodic table; wholesale store services featuring rare earth metals of the periodic table; personnel management; import-export agency services; import-export agency services in the field of mined metals and minerals, rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research; advice, information and consultancy in relation to import-export agency services in the field of rare earths elements and rare earths metals, oxides of rare earths elements and rare earth metals, industrial sales, by-products of rare earth elements and rare earth metals Construction services in the field of buildings; 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Rare earth elements and rare earth metals of the periodic table, namely, lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium and actinide rare earth elements and metals; oxides of rare earth elements and rare earth metals, namely, oxides of lanthanum, oxides of cerium, oxides of praeseodymium, oxides of neodymium, oxides of samarium, oxides of europium, oxides of erbium, oxides of ytterbium; industrial salts; by-products of rare earth elements and rare earth metals, namely, by-products of lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium; chemicals used in industry, science, and research Import-export agency services in the field of rare earth elements and rare earth metals, oxides of rare earth elements and rare earth metals, industrial salts, by-products of rare earth elements and rare earth metals, and chemicals used in industry, science, and research Mining extraction and quarrying services; mining extraction; repair and installation services, namely, repair and installation of apparatuses and instruments for mining and extraction of rare earth elements, metals and chemicals; building construction; repair of apparatuses and instruments for mining and extraction of rare earth elements, metals and chemicals; mining extraction of rare earth elements and rare earth metals and chemicals; mining installation services, namely, installation of equipment for use in mining and extraction of rare earth elements, metals and chemicals; machinery installation, maintenance and repair; mining of rare earth elements and rare earth metals, oxides of rare earth elements and rare earth metals, salts of rare earth elements and rare earth metals, by-products of rare earth elements and rare earth metals, namely, by-products of lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium, in the nature of mining and quarrying services, and chemicals used in industry, science, and research Treatment of rare earth elements and rare earth metals, oxides of rare earth elements and rare earth metals, salts of rare earth elements and rare earth metals, by-products of rare earth elements and rare earth metals being mined metals and minerals, namely, by-products of lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium, and chemicals used in industry, science, and research; processing of rare earth elements and rare earth metals and chemicals; metal refining services; recycling, recovery, purification, treatment and reprocessing services, all for rare earth elements and rare earth metals, and oxides, salts, and by-products of rare earth elements and rare earth metals; recycling, recovery, purification, treatment and reprocessing services for, chemicals used in industry, science, and research

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Rare earth elements and rare earth metals of the periodic table, including lanthanum, cerium, praeseodymium, neodymium, samarium, europium, erbium, ytterbium and all other lanthanide and actinide rare earth elements/metals; oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research. Provision of supply contracts for the distribution and transmission of rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research. Mining and quarrying services; mining extraction; repair and installation services; building construction; repair; extraction of rare earth elements and rare earth metals and chemicals; installation services; machinery installation, maintenance and repair; mining and processing of rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research. Treatment of rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research; processing of rare earth elements and rare earth metals and chemicals; refining services; recycling, recovery, purification, treatment and reprocessing services, all for rare earth elements and rare earth metals, oxides of the aforementioned, salts of the aforementioned, by-products of the aforementioned, chemicals used in industry, science, and research.