Process for the preparation of hexahydrophthalic acid anhydride
    10.
    发明授权
    Process for the preparation of hexahydrophthalic acid anhydride 失效
    六氢邻苯二甲酸酐的制备方法

    公开(公告)号:US4244877A

    公开(公告)日:1981-01-13

    申请号:US41547

    申请日:1979-05-23

    IPC分类号: C07C51/377 C07D307/89

    CPC分类号: C07C51/377

    摘要: A process for the preparation of hexahydrophthalic acid anhydride which comprises hydrogenation .DELTA..sup.4 -tetrahydrophthalic acid anhydride in the liquid phase at a temperature of from 70.degree. to 150.degree. C. and at a pressure of from 30 to 200 bar in the presence of a catalyst selected from palladium, ruthenium, nickel or mixtures thereof arranged in a fixed bed, wherein the catalyst is applied to a carrier of alumina of which at least 20% by weight has been converted into lithium aluminium spinel and the liquid phase is a mixture of .DELTA..sup.4 -tetrahydrophthalic acid anhydride and hexahydrophthalic anhydride in a proportion by weight of from 1:1 to 1:100.

    摘要翻译: 一种制备六氢邻苯二甲酸酐的方法,其包括在液相中在催化剂存在下,在70〜150℃,压力为30〜200巴的条件下氢化DELTA4-四氢邻苯二甲酸酐 选自钯,钌,镍或其混合物,其中催化剂被施加到其中至少20重量%已经转化为锂铝尖晶石的氧化铝载体,液相是DELTA的混合物 4-四氢邻苯二甲酸酐和六氢邻苯二甲酸酐,其重量比为1:1至1:100。