Process for the production of glyoxals and catalysts therefor
    1.
    发明授权
    Process for the production of glyoxals and catalysts therefor 失效
    用于生产乙二醛和其催化剂的方法

    公开(公告)号:US5689011A

    公开(公告)日:1997-11-18

    申请号:US443665

    申请日:1995-05-18

    CPC分类号: C07C45/39 B01J23/50 C07C45/38

    摘要: The present invention provides a process for the production of glyoxals which comprises effecting the oxidative dehydrogenation of a glycol at a temperature of 400.degree. to 700.degree. C. in the presence of a silver-based catalyst composed of silver and at least one element selected from the group consisting of gold, platinum, rhodium and palladium, and phosphorus or a phosphorus compound, as well as such catalysts. These process and catalysts make it possible to produce high-quality glyoxals in high yield and with industrial advantages while minimizing the contents of unreacted raw material and reaction intermediates such as glycolaldehyde and acetol.

    摘要翻译: 本发明提供一种生产乙二醛的方法,该方法包括在由银组成的银基催化剂和至少一种选自以下的元素的银基催化剂存在下,在400-700℃的温度下进行二醇的氧化脱氢反应 由金,铂,铑和钯组成的组,以及磷或磷化合物,以及这些催化剂。 这些方法和催化剂使得可以以高产率和具有工业优势生产高质量乙二醛,同时最小化未反应的原料和反应中间体如乙二醇和丙酮醇的含量。