Increased Oxygen Vacancies in CuO-ZnO Snowflake-like Composites Drive the Hydrogenation of CO_(2) to Methanol  

作　　者：San Xiaoguang Wu Wanmeng Zhang Lei Meng Dan Chang Xiangshuang Tan Jianen Qi Jian 

机构地区：[1]College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China [2]Shenyang Xinghua Aviation Electrical Appliances Co.,Ltd.Shenyang 110023,China [3]Department of Prosthodontics,PLA 964 Hospital,Changchun 130000,China [4]State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2024年第2期22-33,共12页中国炼油与石油化工（英文版）

基　　金：the National Natural Science Foundation of China(Nos.61973223,51972306);the Liao Ning Revitalization Talents Program(No.XLYC2007051);the Liaoning Educational Department Foundation(No.LJKMZ20220762,JYTMS20231510);the Natural Science Foundation of Liaoning Province(No.2023-MS-235,2023-MSLH-270);the Key Project in Science&Technology of SYUCT(No.2023DB005).

摘　　要：Cu/ZnO is widely used in the hydrogenation of carbon dioxide (CO_(2)) to methanol (CH_(3)OH) to improve the lowconversion rate and selectivity generally observed. In this work, a series of In, Zr, Co, and Ni-doped CuO-ZnO catalysts wassynthesized via a hydrothermal method. By introducing a second metal element, the activity and dispersion of the activesites can be adjusted and the synergy between the metal and the carrier can be enhanced, forming an abundance of oxygenvacancies. Oxygen vacancies not only adsorb CO_(2) but also activate the intermediates in methanol synthesis, playing a keyrole in the entire reaction. Co3O4-CuO-ZnO had the best catalytic performance (a CO_(2) conversion rate of 9.17%;a CH_(3)OHselectivity of 92.77%). This study describes a typical strategy for multi-component doping to construct a catalyst with anabundance of oxygen vacancies, allowing more effective catalysis to synthesize CH_(3)OH from CO_(2).

关 键 词：CuO-ZnO catalyst CO_(2)hydrogenation to CH_(3)OH doping oxygen vacancy SYNERGY 

分 类 号：TQ223.121[化学工程—有机化工] O643.36[理学—物理化学]