文献类型：期刊文献

英文题名：Alcohol-Induced Strong Metal-Support Interactions in a Supported Copper/ZnO Catalyst

作者：Jin, Shiqing[1];Zhang, Zekai[1];Li, Didi[1];Wang, Yiming[1];Lian, Cheng[1];Zhu, Minghui[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：62

期号：21

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20231713945275);WOS:【SCI-EXPANDED(收录号:WOS:000974410900001)】；

基金：M. Zhu thanks the research funding sponsored by the National Key R&D Program of China (2022YFB3805504), National Natural Science Foundation of China (22078089), Shanghai Special Program for Fundamental Research (22TQ1400100-7), the Basic Research Program of Science and Technology Commission of Shanghai Municipality (22JC1400600) and SINOPEC (No. 421056).

语种：英文

外文关键词：AIMD Simulation; Cu; ZnO Catalyst; Methanol Steam Reforming; Strong Metal-Support Interaction; In Situ Characterization

摘要：Tuning the strong metal-support interaction (SMSI) in metal catalysts is a promising strategy to improve their catalytic performance. In this article, we systematically investigated the influences of different alcohol/water mixtures on the evolution of the interfacial structure of Cu/ZnO catalysts in the reduction stage. A series of in situ characterization and theoretical simulation studies were performed to elucidate the various mechanisms of alcohol induced SMSI. It was found that when methanol/water is added to H-2 during the reduction pretreatment, more oxygen vacancies are formed on the ZnO support, which facilitates the dissociation of H2O and the hydroxylation of ZnO species. Such promotion eventually favors the SMSI between Cu and ZnO and increases the catalytic activity for the methanol steam reforming reaction. In contrast, the addition of ethanol/water and 1-propanol/water during reduction leads to a physical blockage of the catalyst by alcohol molecules, poisoning the active Cu sites and limiting the migration of ZnO species.