Non-noble metal catalysts for the oxygen reduction reaction
    1.
    发明申请
    Non-noble metal catalysts for the oxygen reduction reaction 失效
    用于氧还原反应的非贵金属催化剂

    公开(公告)号:US20040096728A1

    公开(公告)日:2004-05-20

    申请号:US10630634

    申请日:2003-07-29

    Abstract: Non-noble metal transition metal catalysts can replace platinum in the oxidation reduction reaction (ORR) used in electrochemical fuel cells. A RuxSe catalyst is prepared with comparable catalytic activity to platinum. An environmentally friendly aqueous synthetic pathway to this catalyst is also presented. Using the same aqueous methodology, ORR catalysts can be prepared where Ru is replaced by Mo, Fe, Co, Cr, Ni and/or W. Similarly Se can be replaced by S.

    Abstract translation: 非贵金属过渡金属催化剂可以代替铂在电化学燃料电池中使用的氧化还原反应(ORR)。 制备与铂相当的催化活性的RuxS催化剂。 还提出了一种对该催化剂的环境友好的水合物途径。 使用相同的水性方法,可以制备其中Ru被Mo,Fe,Co,Cr,Ni和/或W替代的ORR催化剂。类似地,Se可以被S.

    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid
    2.
    发明申请
    Method for preparing heteropolyacid catalyst and method for producing methacrylic acid 失效
    制备杂多酸催化剂的方法和生产甲基丙烯酸的方法

    公开(公告)号:US20010029233A1

    公开(公告)日:2001-10-11

    申请号:US09797683

    申请日:2001-03-05

    Abstract: A novel method for preparing a heteropolyacid catalyst containing a heteropolyacid composed of molybdophosphoric acid and/or molybdovanadophosphoric acid, or a salt of the heteropolyacid, is provided. The method comprises preparing an aqueous solution or aqueous dispersion which (1) contains the nitrogen-containing heterocyclic compound, nitrate anions and ammonium ions, (2) the ammonium ion content not exceeding 1.7 mols per mol of the nitrate anion content, and (3) the ammonium ion content not exceeding 10 mols per 12 mols of the molybdenum atom content by mixing raw materials containing the catalyst-constituting elements with the nitrogen-containing heterocyclic compound in the presence of water, drying and calcining the same. This heteropolyacid catalyst excels over conventional catalysts in performance, life and strength.

    Abstract translation: 提供了一种制备含有由钼磷酸和/或钼钒钒酸组成的杂多酸的杂多酸催化剂或杂多酸盐的新方法。 该方法包括制备(1)包含含氮杂环化合物,硝酸根阴离子和铵离子的水溶液或水分散体,(2)每摩尔硝酸根阴离子含量不超过1.7摩尔的铵离子含量,和(3 )通过在水存在下将含有催化剂构成元素的原料与含氮杂环化合物混合,干燥并煅烧,铵离子含量不超过10摩尔/ 12摩尔钼原子含量。 这种杂多酸催化剂在性能,寿命和强度方面优于常规催化剂。

    Process for preparing metal oxide catalyst for acrylic acid production
    5.
    发明申请
    Process for preparing metal oxide catalyst for acrylic acid production 失效
    制备用于丙烯酸生产的金属氧化物催化剂的方法

    公开(公告)号:US20020072628A1

    公开(公告)日:2002-06-13

    申请号:US09984526

    申请日:2001-10-30

    Abstract: A process for preparing a metal oxide catalyst for acrylic acid production which comprises calcining a metal compound mixture at 400null C. or higher to prepare a metal oxide powder comprising Mo, V, Sb, and at least one element selected from the group consisting of Nb and Ta, and supporting a compound comprising at least one element selected from the group consisting of Sb, Tl, Se, As, Pb, Sn, Ag, Cu, Ru, and Rh on the metal oxide powder, and a process for producing acrylic acid by gas phase oxidation of propane using the catalyst.

    Abstract translation: 一种制备用于丙烯酸生产的金属氧化物催化剂的方法,其包括在400℃或更高温度下煅烧金属化合物混合物以制备包含Mo,V,Sb和至少一种选自以下的元素的金属氧化物粉末: Nb和Ta,并且在金属氧化物粉末上负载包含选自Sb,Ti,Se,As,Pb,Sn,Ag,Cu,Ru和Rh中的至少一种元素的化合物,以及其制备方法 使用催化剂通过丙烷的气相氧化丙烯酸。

    Annealed and promoted catalyst
    8.
    发明申请
    Annealed and promoted catalyst 失效
    退火和促进催化剂

    公开(公告)号:US20020183198A1

    公开(公告)日:2002-12-05

    申请号:US10117904

    申请日:2002-04-08

    Abstract: A mixed metal oxide, which may be an orthorhombic phase material, is improved as a catalyst for the production of unsaturated carboxylic acids, or unsaturated nitrites, from alkanes, or mixtures of alkanes and alkenes, by: contacting with a liquid contact member selected from the group consisting of organic acids, alcohols, inorganic acids and hydrogen peroxide to form a contact mixture; recovering insoluble material from the contact mixture; calcining the recovered insoluble material in a non-oxidizing atmosphere; admixing the calcined recovered insoluble material with (i) at least one promoter element or compound thereof and (ii) at least one solvent for the at least one promoter element or compound thereof; removing the at least one solvent to form a catalyst precursor; and calcining the catalyst precursor.

    Abstract translation: 可以是斜方相材料的混合金属氧化物作为用于从烷烃或烷烃和烯烃的混合物生产不饱和羧酸或不饱和亚硝酸盐的催化剂,通过以下方式改进:与选自 由有机酸,醇,无机酸和过氧化氢组成的组合形成接触混合物; 从接触混合物中回收不溶物质; 在非氧化性气氛中煅烧回收的不溶物; 将煅烧回收的不溶物与(i)至少一种助催化剂元件或其化合物和(ii)至少一种用于至少一种助催化剂元件或其化合物的溶剂混合; 除去所述至少一种溶剂以形成催化剂前体; 并煅烧催化剂前体。

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