文献类型：期刊文献

英文题名：An InOx Surface Enrichment on the Cu Nanoparticles for the Methanol Steam Reforming

作者：Kong, Deyong[1];Li, Didi[1];Wang, Zhen[1];Jin, Shiqing[1];Qu, Kai[1];Jiang, Zhaocong[1];Lei, Linfeng[1];Zhu, Minghui[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：15

期号：20

外文期刊名：CHEMCATCHEM

收录：;EI(收录号：20233414594654);WOS:【SCI-EXPANDED(收录号:WOS:001048930700001)】；

基金：Acknowledgments This work was supported by the National Key R&D Program of China (No. 2022YFB3805504, No. 2022YFB3805503, No. 2021YFB3801301) and National Natural Science Foundation of China (Nos. 22075076).

语种：英文

外文关键词：Inhibition mechanism; InOx surface enrichment; (quasi) in situ characterization; methanol steam reforming

摘要：In the realm of heterogeneous catalysts promoted by indium, indium often covers other active metals, thereby compromising catalytic activity. However, the inhibition mechanism remains poorly understood. In this study, we investigate the interaction between copper (Cu) and indium oxide (InOx), focusing on the role of the Cu-In interface during the methanol steam reforming (MSR) reaction. Utilizing a series of (quasi) in situ characterization techniques, we observe a decrease in intrinsic catalytic activity for MSR on the CuIn/Al2O3 catalyst, which can be attributed to the surface enrichment of InOx on Cu nanoparticles. Moreover, our findings reveal that the enrichment suppresses both the dehydrogenation of *CH3O and the dissociation of H2O, ultimately leading to a reduction in catalytic activity. This discovery has the potential to guide the rational design of enhanced indium-based catalysts in the future.