NOx treated mixed metal oxide catalyst for use in oxidation and ammoxidation reactions of alkanes
    4.
    发明公开
    NOx treated mixed metal oxide catalyst for use in oxidation and ammoxidation reactions of alkanes 审中-公开
    Mit NOx behandelter Mischoxidkatalysatorfürdie Oxidation und Ammoxidation von Alkanen

    公开(公告)号:EP1249274A1

    公开(公告)日:2002-10-16

    申请号:EP02252537.2

    申请日:2002-04-09

    摘要: A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
    The catalyst is prepared by drying and calcining an admixture of the precursor compounds in presence of an NO x -source such as HNO 3 e.g. of Mo, V, Te and Nb.

    摘要翻译: 提供改进催化剂性能特征的方法。 改进催化剂的性能特征的方法包括形成具有经验式(I)的混合金属氧化物的前体与A氧化物(NO x)的混合物。 混合物在氮氧化物存在下煅烧,得到含有混合金属氧化物的改进的催化剂。 还包括独立权利要求:(1)生产不饱和腈的方法; 和(2)改进的催化剂组合物。 A:钼和/或钨; D:钒和/或铈; E:碲,锑和/或硒; X:铌,钽,钛,铝,锆,铬,锰,铁,钌,钴,铑,镍,铂,锑,铋,硼,铟,砷,锗,锡,锂,钠,钾,铷, 铯,ium,铍,镁,钙,锶,钡,铪,银,铅,磷,ium,铕,钆,镝,钬,铒,ium,镱和/或镥; a:1; b-d:0.01-1; 和e:其他元素的氧化态。 包括以下的独立权利要求:(1)不饱和羧酸的制备方法,其包括在含有混合金属氧化物(I)的催化剂存在下使烷烃和/或烯烃进行气相催化氧化反应; (2)在含有混合金属氧化物(I)的催化剂存在下,制造不饱和腈的方法,其包括使烷烃和/或烯烃和氨进行气相催化氧化反应; 和(3)包含混合金属氧化物(I)的改进的催化剂组合物。 处理催化剂组合物以在22.1°,27.1°,28.2°,36.2°,45.2°和50.0°的X射线衍射角(2θ)处显示峰,其中a 当与具有相似经验式的未处理催化剂相比时,在衍射角为27.1°的衍射峰的相对增加。

    Annealed and promoted catalyst
    9.
    发明公开
    Annealed and promoted catalyst 审中-公开
    Getemperter und aktivierter Katalysator

    公开(公告)号:EP1254706A2

    公开(公告)日:2002-11-06

    申请号:EP02252860.8

    申请日:2002-04-23

    摘要: 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 nitriles, 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.

    摘要翻译: 可以是斜方相材料的混合金属氧化物作为从烷烃或烷烃和烯烃的混合物生产不饱和羧酸或不饱和腈的催化剂,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物形成接触混合物; 从接触混合物中回收不溶物; 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。