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

Autor: Qijie Jin, Xuelu Meng, Wenyu Ji, Peng Wu, Mutao Xu, Yaping Zhang, Chengzhang Zhu, Haitao Xu
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Catalysis Communications, Vol 174, Iss , Pp 106587- (2023)
Druh dokumentu: article
ISSN: 1873-3905
DOI: 10.1016/j.catcom.2022.106587
Popis: 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.
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