Zhang Zhenhua, Chen Xuanye, Kang Jincan, Yu Zongyou, Tian Jie, Gong Zhongmiao, Jia Aiping, You Rui, Qian Kun, He Shun, Teng Botao, Cui Yi, Wang Ye, Zhang Wenhua, Huang Weixin
Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China.
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, China.
Nat Commun. 2021 Jul 15;12(1):4331. doi: 10.1038/s41467-021-24621-8.
Cu-ZnO-AlO catalysts are used as the industrial catalysts for water gas shift (WGS) and CO hydrogenation to methanol reactions. Herein, via a comprehensive experimental and theoretical calculation study of a series of ZnO/Cu nanocrystals inverse catalysts with well-defined Cu structures, we report that the ZnO-Cu catalysts undergo Cu structure-dependent and reaction-sensitive in situ restructuring during WGS and CO hydrogenation reactions under typical reaction conditions, forming the active sites of Cu-hydroxylated ZnO ensemble and CuZn alloy, respectively. These results provide insights into the active sites of Cu-ZnO catalysts for the WGS and CO hydrogenation reactions and reveal the Cu structural effects, and offer the feasible guideline for optimizing the structures of Cu-ZnO-AlO catalysts.
铜锌铝催化剂被用作水煤气变换（WGS）和一氧化碳加氢制甲醇反应的工业催化剂。在此，通过对一系列具有明确铜结构的氧化锌/铜纳米晶体逆催化剂进行全面的实验和理论计算研究，我们报告称，在典型反应条件下，氧化锌-铜催化剂在水煤气变换和一氧化碳加氢反应过程中会发生依赖于铜结构且对反应敏感的原位重构，分别形成氢氧化铜-氧化锌组合和铜锌合金的活性位点。这些结果为水煤气变换和一氧化碳加氢反应中铜锌氧化物催化剂的活性位点提供了见解，揭示了铜结构的影响，并为优化铜锌铝催化剂的结构提供了可行的指导方针。
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