Periodic mesoporous silica-supported recyclable rhodium-complexed dendrimer catalysts

被引：114

作者：

Reynhardt, JPK ^{[1
]}

Yang, Y ^{[1
]}

Sayari, A ^{[1
]}

Alper, H ^{[1
]}

机构：

[1] Univ Ottawa, CCRI, Dept Chem, Ottawa, ON K1N 6N5, Canada

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 21期

关键词：

D O I：

10.1021/cm0493142

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyamidoamine (PAMAM) dendrimers up to the third generation were grown for the first time inside the channels of a large-pore (6.5 nm) MCM-41 silica. In-depth characterization of such materials showed that the dendrimers grew inside the channels. The third generation was found to almost completely fill the pore system. The supported dendrimers of generations 0, 1, and 2 were phosphinomethylated and then complexed with rhodium. The G(0) and G(1) materials were found to be very active in olefin hydroformylation. The hydroformylation of 1-octene was accomplished with a turnover frequency of 1800 h(-1) at 70degreesC and the catalyst could be recycled several times without loss in activity.

引用

页码：4095 / 4102

页数：8

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