期刊
CHEMISTRY OF MATERIALS
卷 16, 期 21, 页码 4095-4102出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm0493142
关键词
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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.
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