Selective hydrogenation catalyst and a process using that catalyst
    7.
    发明授权
    Selective hydrogenation catalyst and a process using that catalyst 失效
    选择性氢化催化剂和使用该催化剂的方法

    公开(公告)号:US6054409A

    公开(公告)日:2000-04-25

    申请号:US770426

    申请日:1996-12-20

    摘要: A catalyst is described for selective gas phase hydrogenation of acetylenic compounds containing 2 or 3 carbon atoms to the corresponding ethylenic compounds. The catalyst, in the form of spherules or extrudates, comprises palladium, at least one metal from group IB, optionally at least one alkali or alkaline-earth metal, and alumina, in which at least 80% of the palladium and at least 80% of the element from group IB are present in a volume at the periphery of the catalyst defined between a spherical or cylindrical surface with radius r.sub.1 corresponding to the average radius of the spherules or extrudates of the catalyst and a spherical or cylindrical surface with radius r.sub.2 at least equal to 0.8 r.sub.1, the catalyst having a group IB metal/palladium ratio of 0.4 to 3 by weight. Further, it is advantageous for this catalyst that at least 30% of the metal particles contain both palladium and silver.

    摘要翻译: 描述了一种催化剂,用于将含有2或3个碳原子的炔属化合物选择性气相氢化成相应的烯属化合物。 小球或挤出物形式的催化剂包含钯,至少一种来自IB组分的金属,任选至少一种碱金属或碱土金属和氧化铝,其中至少80%的钯和至少80% 来自IB组分的元素存在于催化剂周边的体积中,该体积在球形或圆柱形表面之间,其半径r1对应于催化剂的球体或挤出物的平均半径,并且具有半径r 2的球形或圆柱形表面 至少等于0.8r1,IB族金属/钯比例为0.4-3的催化剂。 此外,该催化剂有利的是,至少30%的金属颗粒含有钯和银。