燃料化学学报（中英文）2025，Vol.53Issue(9)：1320-1329,10.DOI:10.1016/S1872-5813(25)60563-9
镧改性钛酸铜钙光热催化CO2加氢合成甲醇性能研究
Research on the performance of photothermal catalytic CO2 hydrogenation to methanol using lanthanum-modified copper calcium titanate
摘要
Abstract
Perovskite oxide catalysts of copper calcium titanate with lanthanum(La)substituting for calcium sites were prepared by the sol-gel method,and their performance in the photothermal CO2 hydrogenation to methanol was experimentally investigated.Techniques such as XRD,SEM,CO2-TPD,H2-TPR,XPS,UV-vis DRS and EIS were employed to evaluate the advantages of La substitution for the copper calcium titanate catalysts.The results showed that after an appropriate amount of La substitution,the catalyst achieved a methanol space-time yield of 5.788 mmol/(g·h)under 0.8 MPa and 250 ℃ with illumination,which represents a significant improvement in catalytic performance compared to the unsubstituted catalyst.This enhancement is attributed to the promotion of oxygen vacancy formation by La substitution,which enhances the photothermal response efficiency of the catalyst and,consequently,its catalytic activity.关键词
CO2加氢/光热催化/甲醇/钙钛矿氧化物Key words
CO2 hydrogenation/photothermal catalysis/methanol/perovskite oxides分类
化学化工引用本文复制引用
李建宇,纳薇,高文桂,何鹏程..镧改性钛酸铜钙光热催化CO2加氢合成甲醇性能研究[J].燃料化学学报（中英文）,2025,53(9):1320-1329,10.基金项目
The project was supported by Major Science and Technology Project of Yunnan Province(202302AG05005)and Yunnan Province Ten Thousand Talents Plan(YNWR-QNB J-2020-016).云南省科技重大专项(202302AG05005)和云南省万人计划(YNWR-QNBJ-2020-016)资助 （202302AG05005）
