Ca substitution improves the catalytic activity of perovskite LaCoO3 toward toluene: comprehension of electronic structure alteration

Hanlin Chen; Gaoling Wei; Zijuan You; Xiaoliang Liang; Peng Liu; Yiping Yang; Fuding Tan; Suhua Wang; Jieqi Xing; Steven L. Suib

doi:10.1039/D3CC03286H

Ca substitution improves the catalytic activity of perovskite LaCoO₃ toward toluene: comprehension of electronic structure alteration†

Hanlin Chen,^acd Gaoling Wei,^b Zijuan You,^a Xiaoliang Liang,

*^cd Peng Liu,^e Yiping Yang,^cd Fuding Tan,^cd Suhua Wang,^a Jieqi Xing^cd and Steven L. Suib

^f

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* Corresponding authors

^a School of Environmental Science and Technology, Guangdong University of Petrochemical Technology, Maoming 525000, P.R. China

^b Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, P.R. China

^c CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, P.R. China
E-mail: liangxl@gig.ac.cn

^d University of Chinese Academy of Sciences, Beijing 100049, P.R. China

^e Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou 510006, P.R. China

^f Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA

Abstract

For perovskite La_1−xCa_xCoO₃ (Ca-x, x = 0–0.3), Ca-0.2 with the closest O p band center to the Fermi level, displays the best catalytic activity for toluene oxidation. The O p band center determines the reducibility and active oxygen content. This finding is beneficial for the design of highly active perovskite catalysts.

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Ca substitution improves the catalytic activity of perovskite LaCoO₃ toward toluene: comprehension of electronic structure alteration†

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Ca substitution improves the catalytic activity of perovskite LaCoO₃ toward toluene: comprehension of electronic structure alteration

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