物理化学学报2025，Vol.41Issue(6)：64-77,14.DOI:10.1016/j.actphy.2025.100054
软模板法诱导Cu/Al2O3深孔道结构促进等离子催化CO2加氢制二甲醚
Soft template-induced deep pore structure of Cu/Al2O3 for promoting plasma-catalyzed CO2 hydrogenation to DME
摘要
Abstract
Plasma-activated heterogeneous catalysis is a promising strategy for catalytic CO2 hydrogenation under mild conditions.In this study,pore structures with deep pore channels were constructed on Al2O3-x via a soft template method,and Cu/Al2O3-x was prepared by an impregnation method,with Al2O3-x serving as the support for plasma-catalyzed CO2 hydrogenation to dimethyl ether(DME).Cu/Al2O3-0.75/HZSM-5 demonstrated a high performance and discharge efficiency for plasma-catalyzed CO2 hydrogenation.The CO2 conversion and DME yield for plasma-catalyzed CO2 hydrogenation on Cu/Al2O3-0.75/HZSM-5 reached 21.98%and 9.83%,respectively,with selectivities for CO,CH3OH,and DME on Cu/Al2O3-0.75/HZSM-5 of 25.39%,29.89%,and 44.72%,respectively.The deep pore structures on Al2O3-x serve as Cu loading sites,and the confinement effect of the pores enhances the metal-support interaction and Cu metal dispersion.More abundant and stronger Brønsted basic and Lewis acidic sites facilitate the activation and hydrogenation of CO2.Notably,the electric field formed by Cu sites anchored in the deep pore channel structures is conducive to guiding the activated plasma CO2 intermediates into the difficult-to-access pores for hydrogenation.Hydrogenation of the plasma-activated CO2 intermediates in the deep pore channels is crucial for improving plasma-catalyzed CO2 hydrogenation to DME.关键词
等离子体催化/CO2加氢/二甲醚/Al2O3/孔道Key words
Plasma catalysis/CO2 hydrogenation/Dimethyl ether/Al2O3/Pore channel分类
化学化工引用本文复制引用
陈柳云,纪红兵,王文举,陆泰榕,罗轩,谢新玲,黄科林,覃善丽,苏通明,秦祖赠..软模板法诱导Cu/Al2O3深孔道结构促进等离子催化CO2加氢制二甲醚[J].物理化学学报,2025,41(6):64-77,14.基金项目
The project was supported by the National Natural Science Foundation of China(22078074,22208065)and the Key Projects of Guangxi Science and Technology(Guike AA24263003). 国家自然科学基金(22078074,22208065)和广西科技重大专项(Guike AA24263003)资助项目 （22078074,22208065）
