介孔修饰MCM-41负载Pt纳米催化剂高对映选择性催化酮不对称加氢(英文)  

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

作　　者：Susmit Basu 

机构地区：[1]CAT Catalytic Center, RWTH-Aachen University,Worringerweg 2, 52074 Aachen, Germany

出　　处：《催化学报》2015年第4期634-638,共5页

基　　金：financial supports from the RWTH-Aachen University

摘　　要：包含金属 nanotubes 的催化剂被铂金属 nanotubes 的吸附准备到 functionalized 上并且修改了硅石表面(MCM-41 和 fumed 硅石) 。(3-Chloropropyl ) trimethoxysilane 和 cinchonidine 分别地被用于 functionalization 和修正。当在 pretreated functionalized 和修改硅石上使铂金属 nanotubes 妊娠的金属先锋出现，钾 chloroplatinate 被使用。稳固的催化剂被 ESEM， TEM， EDAX，和 XPS 描绘。MCM-41 支持了显示出的铂 nanotube 催化剂 >98% 到向象有将近完整的变换的甲基 pyruvate，乙醇 pyruvate，和 acetophenone 那样的药品地重要的化学药品的一个范围的加氢的 ∼100% enantioselectivity。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.

关 键 词：MCM-41 纳米催化剂 不对称氢化 对映选择性 丙酮酸甲酯 铂 修饰 二氧化硅 

分 类 号：O621.251[理学—有机化学]