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Nano Research

Article Title

Thermally stable Ir/Ce0.9La0.1O2 catalyst for high temperature methane dry reforming reaction

Authors

Fagen Wang, Laboratory of Energy and Environment Interface Engineering, National University of Singapore Suzhou Research Institute, Suzhou 215123, China School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Leilei Xu, School of Environmental Science and Engineering, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China
Weidong Shi, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Jian Zhang, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
Kai Wu, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Yu Zhao, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China
Hui Li, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China
He Xing Li, Department of Chemistry, Shanghai Normal University, Shanghai 200234, China
Guo Qin Xu, Laboratory of Energy and Environment Interface Engineering, National University of Singapore Suzhou Research Institute, Suzhou 215123, China Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
Wei Chen, Laboratory of Energy and Environment Interface Engineering, National University of Singapore Suzhou Research Institute, Suzhou 215123, China Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore Singapore-Peking University Research Center for a Sustainable Low-Carbon Future, 1 CREATE Way, #15-01, CREATE Tower, Singapore 138602, Singapore

Keywords

thermally stable catalyst, Ir/Ce0.9La0.1O2, metal–support interaction, methane dry reforming

Abstract

ABSTRACT In this study, the use of a thermally stable Ir/Ce0.9La0.1O2 catalyst was investigated for the dry reforming of methane. The doping of La2O3 into the CeO2 lattice enhanced the chemical and physical properties of the Ir/Ce0.9La0.1O2 catalyst, such as redox properties, Ir dispersion, oxygen storage capacity, and thermal stability, with respect to the Ir/CeO2 catalyst. Hence, the Ir/Ce0.9La0.1O2 catalyst exhibits higher activity and stabler performance for the dry reforming of methane than the Ir/CeO2 catalyst. This observation can be mainly attributed to the stronger interaction between the metal and support in the Ir/Ce0.9La0.1O2 catalyst stabilizing the catalyst structure and improving the oxygen storage capacity, leading to negligible aggregation of Ir nanoparticles and the Ce0.9La0.1O2 support at high temperatures, as well as the rapid removal of carbon deposits at the boundaries between the Ir metal and the Ce0.9La0.1O2 support.

Graphical Abstract

Publisher

Tsinghua University Press

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