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本文报导了聚γ—(m—二苯膦苯基)丙基硅氧烷钯络合物、聚ω—二苯膦十一烷基硅氧烷钯络合物分别固载于二氧化硅、氧化铝以及硅镁型吸附剂上所得到的六种催化剂,并研究了这些催化剂中的无机载体、有机载体及金属络合物在氢化中对催化剂活性的影响。实验结果表明,有机载体相同,不同的无机载体对催化剂影响的活性顺序为:硅镁型吸附剂>氧化铝>二氧化硅。无机载体相同,则以γ—(m—二苯膦苯基)丙基硅氧烷为有机载体的催化剂的活性大于以ω—二苯膦十一烷基硅氧烷为有机载体的催化剂。同时,金属络合物对催化剂活性的影响,在实验范围内,磷钯比越小,催化活性越高。
In this paper, poly (γ- (m-diphenylphosphinophenyl) propylsiloxane palladium complex and poly (ω-diphenylphosphine) undecylsiloxane palladium complex are respectively supported on silica, Alumina and silica-magnesium type adsorbents, and investigated the influence of inorganic supports, organic supports and metal complexes on the catalyst activity in the hydrogenation of these catalysts. The experimental results show that the order of activity of the same and different inorganic supports on the catalyst is: Mg-Mg sorbent> alumina> silica. In the case of the same inorganic carrier, the activity of the catalyst using γ- (m-diphenylphosphinophenyl) propylsiloxane as the organic carrier is greater than that of the catalyst with ω-diphenylphosphine undecylsiloxane as the organic carrier. At the same time, the effect of metal complexes on the catalyst activity, in the experimental range, the smaller the ratio of phosphorus to palladium, the higher the catalytic activity.