CAS: 1314-61-0; Tantalum(V) Oxide

Ammonium Niobium Oxalate,钽(+5)草酸盐 反应生成Niobium(II) Oxide,氧化钽
参考文献:Processes For The Production Of Niobium Oxides With Controlled Tantalum Content And Capacitors Made Therefrom
标题:Processes For The Production Of Niobium Oxides With Controlled Tantalum Content And Capacitors Made Therefrom
摘要:本发明涉及具有受控钽含量的铌氧化物及其生产方法.钽含量可以是均匀的或不均匀的,并且可以使用各种工艺获得,包括共沉淀,浸渍,沉积和混合工艺.具有受控钽含量的铌酸五氧化物可以进一步通过单步还原过程还原为具有受控钽含量的铌单氧化物,或者可以先使用两步过程还原为具有受控钽含量的铌二氧化物.根据这些过程生产的具有受控钽含量的铌单氧化物可以表现出高比表面积和适当的形态,并可用于制造具有高电容和低泄漏电流的电容器.

专利信息

专利号:US-9295978-B2
优先权日:2012-02-15
标题:Catalyst and method for the direct synthesis of dimethyl ether from synthesis gas
发明人：SCHÄFER ALEXANDER; MADON ROSTAM JAL; VON FEHREN THORSTEN
权利人:BASF CORP
摘要:Catalysts and methods for their manufacture and use for the synthesis of dimethyl ether from syngas are disclosed. The catalysts comprise ZnO, CuO, ZrO 2 , alumina and one or more of boron oxide, tantalum oxide, phosphorus oxide and niobium oxide. The catalysts may also comprise ceria. The catalysts described herein are able to synthesize dimethyl ether directly from synthesis gas, including synthesis gas that is rich in carbon monoxide.

专利号:US-11753503-B2
优先权日:2018-05-17
标 题:Supported onium salts as initiators for the synthesis of polycarbonates by copolymerization of CO2 with epoxides
发明人：FENG XIAOSHUANG; PATIL NAGANATHA; LUCIANI CAROLINE; GNANOU YVES; HADJICHRISTIDIS NIKOS
权利人:UNIV KING ABDULLAH SCI & TECH
摘要:Supported onium salts used as initiators for the synthesis of polycarbonates by copolymerization of carbon dioxide with epoxides are described. Embodiments of the present disclosure describe initiators comprising an insoluble portion including an onium cation attached to an insoluble support; and an anion, wherein the anion is a counter-ion to the onium cation. Embodiments further describe methods of making polycarbonates using the initiator, methods of making initiators, and the like.

专利号:US-4206135-A
优先权日:1979-03-12
标 题 :Catalyst comprising nickel supported on tantalum oxide or niobium oxide and their use as hydrocarbon synthesis catalysts in CO/H2 reactions
发明人：KUGLER EDWIN L; TAUSTER SAMUEL J
权利人:EXXON RESEARCH ENGINEERING CO
摘要:An improved method for the enhanced synthesis of paraffinic hydrocarbons with chain lengths of from 2 to 6 carbon atoms inclusive with reduced methane formation which method comprises the steps of passing a synthesis gas stream comprising CO and H2 over a catalyst at a temperature and pressure for a time sufficient to generate the desired C2-C6 paraffinic product, wherein the catalyst comprises from about 0.01 to about 15 wt. % nickel on a support selected from the group consisting of tantalum oxides, niobium oxides, and other tantalum or niobium containing oxides and mixtures thereof. The nickel average crystallite size is preferably less than 5 nm (50 A). The supported nickel catalyst has a BET surface area of from about 10 to 60 m2/g.

专利号:US-2007087470-A1
优先权日:2005-09-30
标题:Vapor phase synthesis of metal and metal oxide nanowires
发明人：SUNKARA MAHENDRA K; VADDIRAJU SREERAM; DEB BISWAPRIYA; THANGALA JYOTHISH
权利人:SUNKARA MAHENDRA K; VADDIRAJU SREERAM; DEB BISWAPRIYA; THANGALA JYOTHISH
摘要:Vapor phase methods for synthesizing metal nanowires directly without the help of templates. A vapor phase method in which nucleation and growth of metal oxides at temperatures higher than the oxide decomposition temperatures lead to the respective metal nanowires. The chemical vapor transport of tungsten in the presence of oxygen onto substrates kept at temperatures higher than the tungsten oxide decomposition temperature (Ëœ1450° C.) led to nucleation and growth of pure metallic tungsten nanowires. In a similar procedure, tungsten oxide nanowires were synthesized by maintaining the substrates at a temperature lower than the decomposition temperature of tungsten oxide. The vapor transport of low-melting metal oxides provides a procedure for synthesizing metal and metal oxide nanowires.

专利号:US-8324432-B2
优先权日:2008-06-03
标题:Method for producing acrolein by means of dehydration of glycerol
发明人：DUBOIS JEAN-LUC
权利人:DUBOIS JEAN-LUC; ARKEMA FRANCE
摘要:The invention relates to a method for the synthesis of acrolein by means of dehydration of the glycerol in the presence of a solid acid catalyst having a Hammett acidity of less than +2, such as sulfated zirconium oxides, phosphated zirconium oxides, tungstated zirconium oxides, silicated zirconium oxides, sulfated tin or titanium oxides, phosphated aluminas or silicas, doped iron phosphates, and phosphotungstic or silicotungstic acid salts placed in a reactive medium comprising a gaseous phase containing between 1 and 3000 ppm of an acid compound according to the Pearson classification, selected, for example, from SO3, SO2, and NO2, the dehydration reaction being carried out either in a gaseous phase or in a liquid phase.

专利号:US-2014271446-A1
优先权日:2011-11-07
标 题:Catalyst for direct synthesis of hydrogen peroxide
发明人：DESMEDT FRÉDÉRIQUE J; GANHY JEAN-PIERRE; VLASSELAER YVES; MIQUEL PIERRE
权利人:SOLVAY
摘要:A catalyst comprising: a platinum group metal, silver or gold, and a carrier containing niobium or tantalum oxide or niobium or tantalum phosphate, and an oxide other than niobium or tantalum oxide, as well as its use in production of hydrogen peroxide. A process for producing hydrogen peroxide, comprising reacting hydrogen and oxygen in the presence of such catalyst in a reactor, and a process for producing such catalyst.