Effects of Ti modified CeCu mixed oxides on the catalytic performance and SO2 resistance towards benzene combustion

Jiancai Hou; Jiangliang Hu; Weiren Bao; Junxuan Yao; Dongxia Wu; Jiancheng Wang; Bing Wang; Zequan Zeng; Xinmin Cui; Sheng Su; Liping Chang

Catalysis Communications (Jan 2023)

Effects of Ti modified CeCu mixed oxides on the catalytic performance and SO2 resistance towards benzene combustion

Jiancai Hou,
Jiangliang Hu,
Weiren Bao,
Junxuan Yao,
Dongxia Wu,
Jiancheng Wang,
Bing Wang,
Zequan Zeng,
Xinmin Cui,
Sheng Su,
Liping Chang

Affiliations

Jiancai Hou: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
Jiangliang Hu: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Zhejiang University New Materials and Chemical Research Institute, Taiyuan 030024, China; Corresponding authors at: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China.
Weiren Bao: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Zhejiang University New Materials and Chemical Research Institute, Taiyuan 030024, China
Junxuan Yao: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
Dongxia Wu: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
Jiancheng Wang: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
Bing Wang: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
Zequan Zeng: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
Xinmin Cui: Taiyuan University of Technology, Taiyuan 030024, China
Sheng Su: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
Liping Chang: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; Corresponding authors at: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China.

Journal volume & issue: Vol. 174
p. 106596

Abstract

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CeCu mixed oxides surface modified by Ti were prepared by self-assembly method. CeCuTi1 (molar ratio of Ce:Cu:Ti = 1:1:1) exhibited enhanced sulfur resistance during benzene catalytic combustion reaction due to the newly formed Ti-O-Cu/Ce structures with strong-acid sites or incremental Lewis-Brønsted acid complex at 300 °C. H2O accelerated the SO2 poisoning because hydroxy groups promote the formation of sulfates. The decreased reducibility and enhanced acidity of sulfated CeCuTi inhibited the activity but improved SO2 resistance, respectively. Meanwhile, Ti weakened the CuO-CeO2 synergistic effects, reducing the activity of fresh CeCuTi. Effects of Ti on activity and sulfur resistance were offered systemically.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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