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.
C22B 3/22 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés physiques, p. ex. par filtration, par des moyens magnétiques
C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques
C22B 59/00 - Obtention des métaux des terres rares
3.
CATALYST, IN PARTICULAR FOR CRACKING AMMONIA, METHOD FOR PREPARING THE CATALYST AND METHOD FOR SYNTHESISING HYDROGEN
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.
B01J 23/83 - Catalyseurs contenant des métaux, oxydes ou hydroxydes métalliques non prévus dans le groupe du cuivre ou des métaux du groupe du fer en combinaison avec des métaux, oxydes ou hydroxydes prévus dans les groupes avec des terres rares ou des actinides
B01J 37/02 - Imprégnation, revêtement ou précipitation
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.
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.
C01F 17/30 - Composés contenant des métaux de terres rares et au moins un élément autre qu’un métal des terres rares, l'oxygène ou l'hydrogène, p. ex. La4S3Br6
7.
Materials, methods and techniques for generating rare earth carbonates
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.
C01F 17/30 - Composés contenant des métaux de terres rares et au moins un élément autre qu’un métal des terres rares, l'oxygène ou l'hydrogène, p. ex. La4S3Br6
C01F 17/30 - Composés contenant des métaux de terres rares et au moins un élément autre qu’un métal des terres rares, l'oxygène ou l'hydrogène, p. ex. La4S3Br6
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
06 - Métaux communs et minerais; objets en métal
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
39 - Services de transport, emballage et entreposage; organisation de voyages
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
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.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
06 - Métaux communs et minerais; objets en métal
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
39 - Services de transport, emballage et entreposage; organisation de voyages
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
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; repair and maintenance of industrial apparatus and instruments and equipment for use in mining and extraction of rare earth elements, metals and chemicals; 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 building construction and mining extraction Transport of goods; storage of goods; packaging and storage of goods; collection of refuse; collection of waste materials; cargo transportation; delivery of cargo; delivery of goods; disposal of waste being transportation of waste; distribution services, namely, the delivery of mining equipment, metal ore; transport brokerage; packaging of goods; distribution of energy; electricity supply services, namely, the transportation and distribution of electricity; freighting services; warehousing; advice, information and consultancy in relation to the transportation and distribution of electricity Treatment and blending of minerals, ores, mineral concentrates and mineral substances; chemical processing and metal 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 the field of treatment of minerals, ores, and rare earth metals Scientific and technological services and research and design relating thereto, namely, engineering services; scientific analysis, scientific research and industrial design services in the field of mining and metallurgical industries; engineering services; exploration services in the field of the mining industry; mining and minerals exploration in the nature of prospecting; software as a service (SAAS) services featuring software for project management, engineering and exploration services, data analysis and operating mining machinery, all for use in the mining industry; platform as a service services (PAAS) featuring computer software platforms for project management, engineering and exploration services, data analysis and operating mining machinery, all for use in the mining industry; design and development of computer hardware and software; environmental management, protection, conservation and care in the field of environmental conservation, namely, research relating to environmental protection; quality control services for others; product quality testing; chemical analysis; chemical research; scientific laboratory services; advice, information and consultancy in relation to engineering and exploration services and environmental management and protection
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
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
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
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.
16.
MATERIALS, METHODS AND TECHNIQUES FOR CONVERTING RARE EARTH DOUBLE SULFATES INTO RARE EARTH CARBONATES
