文献类型：期刊文献

英文题名：A Pd@Zeolite Catalyst for Nitroarene Hydrogenation with High Product Selectivity by Sterically Controlled Adsorption in the Zeolite Micropores

作者：Zhang, Jian[1];Wang, Liang[1];Shao, Yi[2];Wang, Yanqin[2];Gates, Bruce C.[3];Xiao, Feng-Shou[1]

机构：[1]Zhejiang Univ, Dept Chem, Hangzhou 310028, Zhejiang, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Univ Calif Davis, Dept Chem Engn, Davis, CA 95616 USA

年份：2017

卷号：56

期号：33

起止页码：9747

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20172203720879);WOS:【SCI-EXPANDED(收录号:WOS:000406798700014)】；

基金：This work is supported by the National Natural Science Foundation of China (91634201, U1462202, 21403192, and 91645105).

语种：英文

外文关键词：heterogeneous catalysis; hydrogenation; nitroarenes; palladium nanoparticles; zeolites

摘要：The adsorption of molecules on metal nanoparticles can be sterically controlled through the use of zeolite crystals, which enhances the product selectivity in hydrogenations of reactants with more than one reducible group. Key to this success was the fixation of Pd nanoparticles inside Beta zeolite crystals to form a defined structure (Pd@Beta). In the hydrogenation of substituted nitroarenes with multiple reducible groups as a model reaction, the Pd@Beta catalyst exhibited superior selectivity for hydrogenation of the nitro group, outperforming both conventional Pd nanoparticles supported on zeolite crystals and a commercial Pd/C catalyst. The extraordinary selectivity of Pd@Beta was attributed to the sterically selective adsorption of the nitroarenes on the Pd nanoparticles controlled by the zeolite micropores, as elucidated by competitive adsorption and adsorbate displacement tests. Importantly, this strategy is general and was extended to the synthesis of selective Pt and Ru catalysts by fixation inside Beta and mordenite zeolites.