介孔分子筛MCM-48负载壳聚糖络合铂配合物催化烯烃硅氢加成反应  

Hydrosilylation of Alkenes Catalyzed by MCM-48 Supported Chitosan-Platinum Complex

作　　者：杨虎[1] 张淑芳[1] 白赢[1] 彭家建[1] 厉嘉云[1] 来国桥[1] 

机构地区：[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,浙江杭州310012

出　　处：《杭州师范大学学报（自然科学版）》2012年第3期217-221,共5页Journal of Hangzhou Normal University(Natural Science Edition)

基　　金：浙江省教育厅计划项目(Y201017419)

摘　　要：介孔分子筛MCM-48用壳聚糖进行改性,并负载铂得到催化剂(Pt/CS-MCM-48).采用X射线衍射(XRD)、红外光谱(IR)和热重分析(TG)对催化剂进行表征,结果表明,Pt与CS氨基N原子配位形成Pt—N配位键.同时考察了Pt/CS-MCM-48催化烯烃与三乙氧基硅烷硅氢加成反应的性能:Pt/CS-MCM-48对烯烃硅氢加成反应具有良好的催化性能,催化辛烯反应,β-加成产物的选择性达到90%以上;催化剂具有良好的重复使用性能,可连续使用14次而活性没有明显下降.A new Pt/CS-MCM-48 catalysts was prepared from chitosan supported on MCM-48. The catalyst was characterized by XRD, IR and TG. The results indicated that coordination bond between platinum and nitrogen atom of chitosan was formed. Pt/CS-MCM-48 catalyst has favorable catalytic performance for the hydrosilylation of alkenes, the regioselectivity of adduct is above 90%, and the catalyst can be reused for 14 times without noticeable loss of activity.

关 键 词：MCM-48分子筛 壳聚糖 铂催化剂 硅氢加成 

分 类 号：TQ426.6[化学工程]