Chinese Journal of Catalysis ›› 2015, Vol. 36 ›› Issue (4): 634-638.DOI: 10.1016/S1872-2067(14)60279-5

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High enantioselectivity in the asymmetric hydrogenation of ketones by a supported Pt nanocatalyst on a mesoporous modified MCM-41 support

Susmit Basu   

  1. CAT Catalytic Center, RWTH-Aachen University, Worringerweg 2, 52074 Aachen, Germany
  • Received:2014-11-08 Revised:2014-12-14 Online:2015-03-23 Published:2015-03-23

Abstract:

Catalysts containing metal nanotubes were prepared by the adsorption of platinum metal nanotubes onto functionalized and modified silica surfaces (MCM-41 and fumed silica). (3- Chloropropyl)trimethoxysilane and cinchonidine were used for functionalization and modification, respectively. Potassium chloroplatinate was used as the metal precursor to impregnate platinum metal nanotubes on the pretreated functionalized and modified silica surfaces. The solid catalysts were characterized by ESEM, TEM, EDAX, and XPS. The MCM-41 supported platinum nanotube catalyst showed >98% to ~100% enantioselectivity towards the hydrogenation of a range of pharmaceutically important chemicals such as methyl pyruvate, ethyl pyruvate, and acetophenone with nearly full conversion.

Key words: MCM-41, Platinum nanotube, Functionalized silica, Chiral modifier, Enantioselective hydrogenation