Harmonizing Nanoparticle Exsolution From Ce–Sm Oxide Matrix for Stable Methane Dry Reforming
Abstract
Abstract Catalyst deactivation hinders the application of high‐temperature catalysis such as methane dry reforming, where nanoparticle exsolution will likely clear the path. However, the harsh reaction conditions often easily unbalance the exsolution degree, leading to either sintering or insufficient exsolution of metal nanoparticles. Here, we achieve the fabrication of highly dispersed yet exposed Rh nanoparticles exsolved from the Ce–Sm oxide matrix. Starting from examining the metal‐support interaction of Rh–CeO 2 and Rh–Sm 2 O 3 , the exsolution dynamics of Rh nanoparticles are studied via multiple in situ techniques. Rapid exsolution from CeO 2 induces Rh sintering and catalytic deactivation, whereas sluggish exsolution from Sm 2 O 3 results in Rh encapsulation with poor activity. The balanced metal‐support interaction harmonizes the exsolution of Rh nanoparticles from the Ce–Sm oxide matrix, fabricating an antisintering and coke‐resistant catalyst for methane dry reforming. This work provides insights into the development of catalysts with structural robustness, where the essence lies in the engineering of nanoparticle exsolution.
Article Details
Authors (19)
Yongjie Ye
Haofan Lei
Yuanbin Qin
Zhen Wang
Sunpei Hu
Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics
Tao Zhou
College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
Lijun Zhang
Key Laboratory of Functionalized Molecular Solids of Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science
Ruyang Wang
Zizhen Xiao
Xinhua Gao
Qingxiang Ma
State Key Laboratory of High‐efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical Engineering Ningxia University Yinchuan 750021 P.R. China
Shucheng Shi
School of Physical Science and Technology; Center for Transformative Science
Hui Zhang
The Fourth Hospital of Hebei Medical University Shijiazhuang China
Han Yan
Shiming Zhou
Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics
Chao Ma
Zhi Liu
Laboratory of Atmospheric Environment and Pollution Control
Jing Tao
Jie Zeng
School of Chemistry & Chemical Engineering