Studies on the Initial Transient Period of Heterogeneous Asymmetric Catalytic Hydrogenation of Ethyl Pyruvate

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (5): 391-395.

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Studies on the Initial Transient Period of Heterogeneous Asymmetric Catalytic Hydrogenation of Ethyl Pyruvate

TAO Guozhong, LU Guanzhong*, GUO Yun, WANG Yanqin, GUO Yanglong, ZHANG Zhigang, LIU Xiaohui, WANG Yunsong

Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China

Received:2009-05-25 Online:2009-05-25 Published:2013-02-05

Abstract

Abstract: The asymmetric hydrogenation of ethyl pyruvate over a quinine-modified Pt/Al2O3 catalyst was studied under atmospheric pressure in acetic acid. The quinine modifier concentration, reaction temperature, pre-modification time, and initial substrate concentration affect the character of the initial transient period (ITP). The pre-conditioning of O2 for the catalyst can increase the enantioselectivity of product and improve the ITP phenomenon.

Key words: ethyl pyruvate, platinum, alumina, quinine-modified catalyst, asymmetric hydrogenation, initial transient period

TAO Guozhong;LU Guanzhong*;GUO Yun;WANG Yanqin;GUO Yanglong;ZHANG Zhigang;LIU Xiaohui;WANG Yunsong. Studies on the Initial Transient Period of Heterogeneous Asymmetric Catalytic Hydrogenation of Ethyl Pyruvate[J]. Chinese Journal of Catalysis, 2009, 30(5): 391-395.

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Studies on the Initial Transient Period of Heterogeneous Asymmetric Catalytic Hydrogenation of Ethyl Pyruvate

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