甲醇
催化作用
格式化
反向
氧化物
逆温
吸附
化学工程
金属
材料科学
无机化学
化学
有机化学
热力学
物理
几何学
数学
工程类
作者
Yangzhi Xu,Zirui Gao,Yao Xü,Xuetao Qin,Xin Tang,Zhiwei Xie,Jinrong Zhang,Chuqiao Song,Siyu Yao,Wu Zhou,Ding Ma,Lili Lin
标识
DOI:10.1016/j.apcatb.2023.123656
摘要
Hydrogenation of CO2 into methanol at low-temperature on Cu-based catalysts is of great significance, but remains challenging to enhance activity. In this paper, we report an inverse catalyst constructed with nano-ZrZnOx supported on Cu particles with outstanding methanol synthesis performance at 220 ℃, two times higher than that of commercial Cu/ZnO/Al2O3 catalysts under the same conditions. Detailed structure characterization and performance evaluation demonstrate that the ZrZnOx mixed oxide serves as the most active oxide-metal interface site for CO2 hydrogenation. The ZrZnOx/Cu inverse catalyst increases the weak and medium CO2 adsorption sites which are further demonstrated responsible to the methanol productivity. In situ DRIFTs studies reveal that the inverse interface accelerates the reduction of asymmetric formate intermediates and prevents the generation of CO. The combination of enhanced CO2 activation capability and accelerated hydrogenation rate of intermediates over the ZrZnOx/Cu inverse catalyst probably contribute to the remarkable methanol synthesis performance from CO2.
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