Carbonylation catalyst
    7.
    发明公开
    Carbonylation catalyst 失效
    羰基化催化剂

    公开(公告)号:EP0782979A1

    公开(公告)日:1997-07-09

    申请号:EP97101741.3

    申请日:1989-08-01

    摘要: Described are catalysts which are useful for the carbonylation of alcohols, ethers and ether alcohols to esters and, optionally, to carboxylic acids, by reaction thereof in the vapor state, said catalysts having the formulae

            H[MW 12 PO 40 ]     (a)

       in which M is selected from Pd, Mn, Co, Ni and Zn;

            Na 8 [Rh 2 W 12 O 42 ]     (b)



            RhW x Mo y PO 40      (c)

       wherein the combinations x/y are selected from 8/4, 6/6, 4/8 and 2/10.

    摘要翻译: 所述催化剂可用于醇,醚和醚醇通过其在蒸气状态下的反应而羰基化为酯和任选的羧酸,所述催化剂具有通式H [MW12PO40](a)其中M为 选自Pd,Mn,Co,Ni和Zn; Na8 [Rh2W12O42](b)RhWxMoyPO40(c)其中x / y组合选自8 / 4,6 / 6,4 / 8和2/10。

    Process for producing methacrylic acid and/or methacrylic acid ester
    9.
    发明公开
    Process for producing methacrylic acid and/or methacrylic acid ester 失效
    一种用于生产甲基丙烯酸和/或甲基丙烯酸的酯的方法。

    公开(公告)号:EP0100057A1

    公开(公告)日:1984-02-08

    申请号:EP83107068.5

    申请日:1983-07-19

    摘要: A process for producing methacrylic acid and/or methacrylic acid ester by oxidative dehydrogenation of isobutyric acid and/or isobutyric acid ester, wherein the improvement comprises using a catalyst having the composition represented by
    (where X denotes at least one element selected from the group consisting of lithium, beryllium, magnesium, barium, tin, lead, chromium, tungsten, and tellurium; subscripts a, b, c, d, e, f, and g each denote the ratio of the respective elements; b, c, d, e, and f are in the range of 0≦b≦3, 0.2≦c≦2,0.005≦d≦2,0.005≦e≦0.2, and 0≦f≦2, respectively, when a is 12, and the value of g is determined according to the ratio and valence of the other elements), and at least a part of the composition having the heteropoly acid structure.