作　　者： ; ; ; ; ; ; ;

机构地区： 杭州师范大学材料与化学化工学院有机硅化学及材料技术教育部重点实验室

出　　处： 《化学学报》 2009年第10期1155-1158,共4页

摘　　要： 采用湿法浸渍,Cu(PPh3)2BH4作为还原剂制备了负载型PtCu/C双金属催化剂,Pt∶Cu原子比为0.5～2.0.用于苯乙烯与三乙氧基硅烷加成反应,Cu元素的引入使Pt/C催化剂的催化性能得到提高,表现出比Speier催化剂、Karestedt催化剂和Pt/C催化剂更好的β-加成产物选择性.催化直链烯烃与三乙氧基硅烷加成反应表现出优良的催化性能,并且催化剂可重复使用. Activated carbon-supported platinum and copper bimetallic catalyst with Pt/Cu atomic ratios in the range of 0.5～2.0 was prepared by the impregnation of platinum salt followed by reduction using Cu（PPh3）2BH4 as the reductant. It was found that the catalytic performance of Pt/C catalyst was promoted in the presence of Cu. The catalyst, PtCu/C with a atomic ratio Pt/Cu of 1∶1, showed high catalytic selectivity as comparison with Speier’s, Karstedt’s or Pt/C catalyst in the hydrosilylation of styrene with triethoxysilane. In addition, it exhibited high activity and selectivity for catalysis hydrosilylation of various alkenes with triethoxysilane, and there was no apparent catalytic activity decreasing observed after 4 recycles.

关 键 词： 硅氢加成

领　　域： [理学] [理学] [化学工程]