SO2 reduction for sulfur production by CO over Ce-Al-Ox composite oxide catalyst

Qijie Jin; Xuelu Meng; Wenyu Ji; Peng Wu; Mutao Xu; Yaping Zhang; Chengzhang Zhu; Haitao Xu

Catalysis Communications (Jan 2023)

SO2 reduction for sulfur production by CO over Ce-Al-Ox composite oxide catalyst

Qijie Jin,
Xuelu Meng,
Wenyu Ji,
Peng Wu,
Mutao Xu,
Yaping Zhang,
Chengzhang Zhu,
Haitao Xu

Affiliations

Qijie Jin: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China; Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Nanjing 210031, PR China
Xuelu Meng: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
Wenyu Ji: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
Peng Wu: Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China
Mutao Xu: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China; College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
Yaping Zhang: Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, PR China
Chengzhang Zhu: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China
Haitao Xu: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, PR China; Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Nanjing 210031, PR China; Corresponding author at: School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China.

Journal volume & issue: Vol. 174
p. 106587

Abstract

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The optimal catalyst 10%Ce-Al-Ox combined the advantages of CeO2 and Al2O3, and 10%Ce-Al-Ox exhibited higher than 98% SO2 conversion and higher than 86% sulfur yield in the temperature range of 425–500 °C. VASP calculation showed that the adsorption energy of Ce-Al-Ox catalyst for SO2 was higher than that of Al2O3 for SO2. Finally, for the SO2 reduction by CO over 10%Ce-Al-Ox, the reaction intermediates were bicarbonates, monodentate carbonates and gaseous CO for CO, while weakly adsorbed sulfate, weakly adsorbed SO2 and binuclear bidentate sulfate for SO2.

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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