Asymmetric Hydrogenation of Ethyl Pyruvate on Chirally Modified Pt Catalysts Supported on Al2O3@FDU-14 Mesoporous Composites

被引：5

作者：

Wang Haihong ^{[1
]}

Wang Hongna ^{[1
]}

Li Xiaohong ^{[1
]}

Wang Yimeng ^{[1
]}

Wu Peng ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai Key Lab Green Chem & Chem Proc, Shanghai 200062, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2011年 / 32卷 / 11期

基金：

中国国家自然科学基金;

关键词：

platinum; cinchonidine; ethyl pyruvate; asymmetric hydrogenation; periodic mesoporous resol; mesoporous alumina composite; ENANTIOSELECTIVE HYDROGENATION; MODIFIED PLATINUM; ALPHA-KETOESTERS; METHYL PYRUVATE; ENHANCEMENT; SBA-15; ROUTE;

D O I：

10.1016/S1872-2067(10)60274-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of Al2O3@FDU-14 composites with different alumina loadings were prepared using a solid state grinding method. The 4% Pt catalysts supported on Al2O3@FDU-14 were prepared by impregnation using H2PtCl6. X-ray diffraction, transmission electron microscopy, and nitrogen adsorption characterization of the Pt/Al2O3@FDU-14 catalysts indicated that the mesoporous features of the FDU-14 mesopolymer were retained. The Pt/Al2O3@FDU-14 catalysts were used in the asymmetric hydrogenation of ethyl pyruvate after they were chirally modified with cinchonidine. For Al2O3 loading from 5% to 15%, Al2O3 was uniformly dispersed inside the mesoporous channels of FDU-14 host. Ethyl pyruvate conversion and their ee values increased with increasing alumina loading, with a highest cc value of 80%. It was suggested that the alumina coating inside the mesoporous channels of FDU-14 decreased the surface electronic density of the FDU-14 mesopolymer so that cinchonidine can be easily adsorbed on the surface of Pt/Al2O3@FDU-14 catalysts. As compared with chirally modified Pt/FDU-14 catalysts, chirally modified Pt/Al2O3@FDU-14 catalysts gave higher ee values.

引用

页码：1677 / 1684

页数：8

共 29 条

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