✦ LIBER ✦

The preparation of zeolite-supported polysiloxane–triphenylphosphine–p complex and its catalytic behavior in hydrogenation

✍ Scribed by Ze-Xun Liu; Kun Jiang; Mei-Yu Huang; Ying-Yan Jiang

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 94 KB
Volume: 10
Category: Article
ISSN: 1042-7147
DOI: 10.1002/(sici)1099-1581(199901/02)10:1/2<112::aid-pat779>3.0.co;2-p

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✦ Synopsis

A new phosphine-containing polymer ligand, zeolitesupported polysiloxane±triphenylphosphine (Zeo-SiO-P), has been prepared from zeolite, triphenylphosphine, ethyl orthosilicate and water by a very simple method. A palladium complex of zeolite-supported polysiloxane± triphenylphosphine (Zeo-SiO-P-Pd) has been found to be able to catalyze the hydrogenation of various unsaturated compounds as nitrobenzene and methacrolein to corresponding reduction compounds at 40°C under atmospheric hydrogen pressure in 100% yield. This catalyst is very stable in the hydrogenation and can be reused several times without appreciable change in catalytic activity.

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