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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (10): 1155-1158. 上一篇    

研究简报

Cu(PPh3)2BH4作还原剂制备PtCu/C催化剂催化烯烃硅氢 加成反应研究

白 赢 彭家建 胡应乾 厉嘉云 邱化玉
蒋剑雄 来国桥*

  

  1. (杭州师范大学有机硅化学及材料技术教育部重点实验室 杭州 310012)

  • 投稿日期:2008-09-18 修回日期:2008-12-20 发布日期:2009-05-28
  • 通讯作者: 来国桥

Activated Carbon-Supported Bimetallic Catalyst Pt-Cu/C Using Cu(PPh3)2BH4 as Reductant: Preparation and Efficient Catalytic Performance in Hydrosilylation of Alkenes

Bai, Ying Peng, Jiajian Hu, Yingqian Li, Jiayun Qiu, Huayu
Jiang, Jianxiong Lai, Guoqiao*

  

  1. (Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education,
    Hangzhou Normal University, Hangzhou 310012)
  • Received:2008-09-18 Revised:2008-12-20 Published:2009-05-28
  • Contact: Lai, Guoqiao

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被引次数

18 | 1

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.

关键词: Pt-Cu/C, 硅氢加成, Cu(PPh3)2BH4

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.

Key words: Pt-Cu/C, hydrosilylation, Cu(PPh3)2BH4