化学
催化作用
选择性
色散(光学)
格式化
沸石
吸附
甲醇
甲酸甲酯
无机化学
铜
协同催化
化学工程
物理化学
有机化学
物理
光学
工程类
作者
Xiaoli Yang,Hongmin Duan,Ruifeng Wang,Fangdi Zhao,Fangming Jin,Wei Jiang,Guangting Han,Qingxin Guan,Haoxi Ben
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-08-08
卷期号:62 (33): 13419-13427
被引量:1
标识
DOI:10.1021/acs.inorgchem.3c01763
摘要
The utilization of Cu-based catalysts in CO2 conversion into valuable chemicals is of significant interest due to their potential in mitigating greenhouse gas emissions. However, the controllable design of Cu-based catalysts and the regulation of their mechanism remain challenging. In this study, a series of efficient Cu/L catalysts were prepared for this process, and the intrinsic influencing factors on the reaction routes were systematically revealed. Various techniques revealed that Cu particles in L-supported catalysts exhibited higher dispersion and formed Cu–O(OH)–K interfacial sites. However, with increasing Cu loading, the dispersion of Cu particles and the percentage of Cu–O(OH)–K interfaces decreased. Kinetic investigations revealed that the adsorption configuration and electronic structure of Cu species codetermined the reaction pathways and resulting selectivity. Cu/L catalysts possessing Cu–O(OH)–K interfaces and small particles demonstrated the preferential formation of formate species, promoting methanol formation. However, larger Cu particles generated carboxylate intermediates, resulting in higher CO selectivity..
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