燃料化学学报（中英文）2026，Vol.54Issue(4)：58-67,10.DOI:10.1016/S1872-5813(25)60616-5
CuZnAl催化剂中Cu价态对CO2加氢合成甲醇反应的影响
The role of copper valence states in CuZnAl catalysts for CO2-to-methanol conversion
摘要
Abstract
CuZnAl(CZA)is a classic industrial catalyst widely used for the synthesis of methanol from syngas,but its catalytic performance is not optimal for the hydrogenation of CO2 to methanol.Meanwhile,understanding the catalytic mechanism of Cu species in the CZA catalyst remains a great challenge.In this study,we systematically investigated the valence state change of active Cu species in CZA catalyst and their influence on catalytic performance by modifying the catalysts with varying amounts of electron donor K,thus identifying the catalytic function of Cu species with different valence states.H2-TPR,XPS and HR-TEM characterizations reveal that the highly dispersed K species supported on CZA catalysts will inhibit the reduction of CuO,resulting in a small amount of Cu2O active species being produced under reaction conditions thus causing a decrease in catalytic activity.Furthermore,XRD and Cu LMM spectra show that the proportion of Cu0 in K-modified CZA catalysts increases with K loading,but a higher proportion of Cu0 species on the surface obviously promotes the reverse water gas shift(RWGS)reaction.According to the results of in situ infrared spectroscopy,CZA catalyst follows the reaction pathway mediated by HCOO*in the hydrogenation of CO2 to methanol.关键词
CO2加氢/CuZnAl催化剂/甲醇/活性物种/电子助剂Key words
CO2 hydrogenation/CuZnAl catalysts/methanol/active species/electronic promoter分类
化学化工引用本文复制引用
邱正璞,傅亚杰,吴立志,汤禹,徐晓颖,谭理,许运钊,王鹏,陶小霞,张惠民,陈阳,刘意,杨桦,曹逢海..CuZnAl催化剂中Cu价态对CO2加氢合成甲醇反应的影响[J].燃料化学学报（中英文）,2026,54(4):58-67,10.基金项目
Supported by the National Key Research and Development Program of China(2022YFB4101800)and the National Natural Science Foundation of China(22172032,U22A20431). （2022YFB4101800）
