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Catalysts containing metal nanotubes were prepared by the adsorption of platinum metal nano-tubes onto functionalized and modified silica surfaces(MCM-41 and fumed silica).(3- Chloropro-pyl)trimethoxysilane and cinchonidine were used for functionalization and modification, respec-tively. 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 pharmaceuti-cally important chemicals such as methyl pyruvate, ethyl pyruvate, and acetophenone with nearly full conversion.
Catalysts containing metal nanotubes were prepared by the adsorption of platinum metal nano-tubes onto functionalized and modified silica surfaces (MCM-41 and fumed silica). (3-Chloropro-pyl) trimethoxysilane and cinchonidine were used for functionalization and modification, respec- tively . The 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 toward the hydrogenation of a range of pharmaceuti-cally important chemicals such as methyl pyruvate, ethyl pyruvate, and acetophenone with nearly full conversion.