氧化还原
催化作用
接口(物质)
材料科学
化学
氧化还原
锰
化学工程
无机化学
生物化学
有机化学
分子
工程类
吉布斯等温线
作者
Haiyan Wang,Shuang Wang,Shida Liu,Yiling Dai,Zhenghao Jia,Xuejing Li,Shuhe Liu,Feixiong Dang,Kevin J. Smith,Xiaowa Nie,S.J. Hou,Xinwen Guo
标识
DOI:10.1038/s41467-024-48120-8
摘要
Abstract Multicomponent oxides are intriguing materials in heterogeneous catalysis, and the interface between various components often plays an essential role in oxidations. However, the underlying principles of how the hetero-interface affects the catalytic process remain largely unexplored. Here we report a unique structure design of MnCoO x catalysts by chemical reduction, specifically for ethane oxidation. Part of the Mn ions incorporates with Co oxides to form spinel Mn x Co 3- x O 4 , while the rests stay as MnO 2 domains to create the MnO 2 -Mn x Co 3- x O 4 interface. MnCoO x with Mn/Co ratio of 0.5 exhibits an excellent activity and stability up to 1000 h under humid conditions. The synergistic effects between MnO 2 and Mn x Co 3- x O 4 are elucidated, in which the C 2 H 6 tends to be adsorbed on the interfacial Co sites and subsequently break the C-H bonds on the reactive lattice O of MnO 2 layer. Findings from this study provide valuable insights for the rational design of efficient catalysts for alkane combustion.
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