CAS: 1312-81-8; Lanthanum(Iii) Oxide

Chloro Hypochlorite;Zirconium,氢化铈 (Ceh3),三氢化镧 以to Form A Weight Ratio Of 25 G Of Zirconium Oxide,12.5 G Of Cerium Oxide,And 9.5 G Of Lanthanum Oxide的收率获得zirconium Oxide
参考文献:Exhaust Gas Purifying Catalyst
标题:Exhaust Gas Purifying Catalyst
摘要:一种废气净化催化剂,具有抗高温的三维结构,并涂覆有至少一种贵金属,耐火无机氧化物和含有铈和镧的氧化锆的催化活性成分,其中,含有铈和镧的氧化锆的晶体结构为氧化锆的四方晶体结构.

专利信息

专利号:WO-2025037328-A1
优先权日:2023-08-11
标题:A method for synthesis of rare-earth oxychloride and production of rare-earth metal/alloy
发明人：BORRA PROF CHENNA RAO; LAKSHMI BORRA VENKATA; JANA DR PRASANTA; ROUT SONALI
权利人:INDIAN INSTITUTE OF TECH KHARAGPUR
摘要:The present disclosure relates to a method for external synthesis of rare-earth oxychloride and production of rare-earth metal or alloy. The method comprises the steps of adding hydrochloric acid (HCl) to a portion of a pre-defined weight of rare-earth oxide (RE2O3) converting the portion of RE2O3 to rare-earth chloride hydrate (RECl3.xH2O). The method further comprises mixing the residual rare-earth oxide (RE2O3) with the RECl3.xH2O and heating the mixture to a temperature exceeding 300℃ to obtain rare-earth oxychloride (REOCl). The method includes making the obtained REOCl to react directly with a reductant or mixture of reductant and alloying element in a temperature of 600℃ - 1400℃ for reducing the rare-earth oxychloride (REOCl) to rare-earth metal or alloy; and upon cooling, treating the reduced mass of rare-earth metal or alloy with water and dilute acid to remove reaction byproducts such as calcium chloride (CaCl2) and calcium oxide (CaO).

专利号:US-6835367-B2
优先权日:2000-03-28
标 题 :Single step process for the synthesis of nanoparticles of ceramic oxide powders
发明人：JAMES JOSE; JOSE RAJAN; JOHN ASHA MARY; KOSHY JACOB
权利人:COUNCIL SCIENT IND RES
摘要:The present invention relates to a single step process for the synthesis of nanoparticles of phase pure ceramic oxides of a single or a multi-component system comprising one or more metal ions. The process comprises preparing a solution containing all the required metal ions in stoichiometric ratio by dissolving their respective soluble salts in an organic solvent or in water, preparing a precursor, adjusting the nitrate/ammonia content in the system, and heating the system.

专利号:WO-2025078932-A1
优先权日:2023-10-09
标题 :A process for selective dimethyl carbonate (dmc) synthesis and a system thereof
发明人：PULIKKEEL UNNIKRISHNAN; ROUTRAY KAMALAKANTA; CHINTHALA PRAVEEN KUMAR; DAS ASIT KUMAR
权利人:RELIANCE INDUSTRIES LTD
摘要:The present disclosure provides a process for the selective synthesis of dimethyl carbonate 0 (DMC). More particularly, the present disclosure provides a process for inhibiting catalyst deactivation in a process for selective DMC synthesis. The process is particularly characterized by conducting the process in the presence of a small quantity of air. Further provided herein is a system for facilitating the said process. The process and the system (Figure 1) of the present disclosure prolong the life of the catalyst by virtue of introduction of air into the reactor.

专利号:US-6649662-B2
优先权日:2000-07-24
标题 :Methods for optimizing fischer-tropsch synthesis of hydrocarbons in the distillate fuel and/or lube base oil ranges
发明人：KIBBY CHARLES L
权利人:CHEVRON USA INC
摘要:Methods for converting of syngas to higher molecular weight products using Fischer-Tropsch synthesis, and methods for optimizing the catalyst systems in the synthesis, are disclosed. In one embodiment, the methods use cobalt/ruthenium Fischer-Tropsch catalysts in combination with an olefin isomerization catalyst, which isomerizes double bonds in C4+ olefins as they are formed. In another embodiment, the methods use Fischer-Tropsch catalysts that may or may not be cobalt/ruthenium catalysts, in combination with olefin isomerization catalysts which are acidic enough to isomerize the C4+ olefins but not too acidic to cause rapid coking. A benefit of using the relatively less acidic zeolites is that the ratio of iso-paraffins to aromatics is increased relative to when more acidic zeolites are used. Also, the relatively less acidic zeolites do not coke as readily as the relatively more acidic zeolites. The methods can advantageously be optimized using combinatorial chemistry, in which a database of combinations of catalyst systems and, optionally, reaction conditions, which provide various product streams, are generated. As market conditions vary and/or product requirements change, conditions suitable for forming desired products can be identified with little or no downtime.

专利号:US-11814290-B2
优先权日:2017-09-27
标题 :Processes for production of carbon nanotubes from natural rubber
发明人：LIN MING; TANG YUANTING KAREN; CHAI HUI TENG CASANDRA; ZHONG ZIYI; LUO JI ZHONG
权利人:AGENCY SCIENCE TECH & RES
摘要:A method for the synthesis of carbon nanotubes from natural rubber, including providing a first material, the first material may include natural rubber or derivatives thereof, thermally decomposing the first material at a first temperature into an intermediate material, contacting the intermediate material with a catalyst, treating the intermediate material in contact with the catalyst at a second temperature, for forming carbon nanotubes. Adjusting an average characteristic of resulting nanotubes, including carrying out the synthesis method as a reference method and for decreasing the average diameter of the nanotube: decreasing the second temperature and/or decreasing the reaction time and/or increasing the concentration of H2 in the forming gas in relation to the reference method. Or, for increasing the average diameter of the nanotube: increasing the second temperature and/or increasing the reaction time and/or decreasing the concentration of H2 in the forming gas in relation to the reference method.

专利号:US-7767627-B1
优先权日:1994-10-18
标 题:Combinatorial synthesis of inorganic or composite materials
发明人：GOLDWASSER ISY; ROSS DEBRA A; SCHULTZ PETER G; XIANG XIAO-DONG; BRICENO GABRIEL; SUN XIAO-DONG; WANG KAI-AN
权利人:SYMYX SOLUTIONS INC; UNIV CALIFORNIA
摘要:Methods and apparatus for the preparation and use of a substrate having an array of diverse materials in predefined regions thereon. A substrate having an array of diverse materials thereon is generally prepared by delivering components of materials to predefined regions on a substrate, and simultaneously reacting the components to form at least two materials or, alternatively, allowing the components to interact to form at least two different materials. Materials which can be prepared using the methods and apparatus of the present invention include, for example, covalent network solids, ionic solids and molecular solids. More particularly, materials which can be prepared using the methods and apparatus of the present invention include, for example, inorganic materials, intermetallic materials, metal alloys, ceramic materials, organic materials, organometallic materials, nonbiological organic polymers, composite materials (e.g., inorganic composites, organic composites, or combinations thereof), etc. Once prepared, these materials can be screened for useful properties including, for example, electrical, thermal, mechanical, morphological, optical, magnetic, chemical, or other properties. Thus, the present invention provides methods for the parallel synthesis and analysis of novel materials having useful properties.