Process for the selective hydrogenation of compounds comprising endo and
exocyclic unsaturations
    4.
    发明授权
    Process for the selective hydrogenation of compounds comprising endo and exocyclic unsaturations 失效
    用于选择性氢化包含内环和外环不饱和化合物的方法

    公开(公告)号:US5475174A

    公开(公告)日:1995-12-12

    申请号:US156777

    申请日:1993-11-24

    摘要: The invention concerns a process for the selective hydrogenation of polyunsaturated cyclic compounds comprising at least one endocyclic carbon-carbon double bond and at least one terminal exocyclic carbon-carbon double bond, said double bonds not being conjugated, to form a mixture essentially containing the saturated ring compound and comprising at least one terminal exocyclic double bond, the process being carried out in the presence of hydrogen under a pressure of from 1 to 10 MPa and at a temperature of from 0.degree. to 200.degree. C., and in the presence of a catalyst including a support and (a) from 0.1 to 5% by weight of at least one metal from group VIII (iridium, osmium, nickel, palladium, platinum and rhodium) and (b) from 0.01 to 15% by weight of at least one metal from group IVa (tin, germanium and lead), the molar ratio between metals of group VIII and group IVa being between 0.3 and 3. The process is used for the hydrogenation of 4-vinylcylcohexene to vinylcyclohexane.

    摘要翻译: 本发明涉及包含至少一个内环碳 - 碳双键和至少一个末端环外碳 - 碳双键的多不饱和环状化合物的选择性氢化的方法,所述双键不是共轭的,以形成基本上含有饱和的 环化合物并且包含至少一个末端环外双键,该方法在氢气存在下,在1至10MPa的压力和0至200℃的温度下进行,并且在 包含载体的催化剂和(a)0.1至5重量%的至少一种第VIII族金属(铱,锇,镍,钯,铂和铑)和(b)0.01至15重量% 来自IVa族(锡,锗和铅)的至少一种金属,VIII族和IVa族金属之间的摩尔比在0.3和3之间。该方法用于将4-乙烯基环己烯氢化成乙烯基环己烷。