CeO2-La2O3/ZSM-5 sorbents for high-temperature H2S removal

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• 作者：Dongjing Liu ; Weiguo Zhou ; Jiang Wu
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：33
• 期：6
• 页码：1837-1845
• 全文大小：2,170 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220
• 卷排序：33

文摘

Performance of CeO₂-La₂O₃/ZSM-5 sorbents for sulfur removal was examined at temperature ranging from 500 oC to 700 oC. The sulfur capacity of 5Ce5La/ZSM-5 was much bigger than that of CeO₂/ZSM-5. H₂ had a negative impact on the sulfidation; however, CO had little influence on sulfur removal. The characterization results showed that CeO₂ and La₂O₃ were well dispersed on ZSM-5 because of the intimate admixing of La₂O₃ and CeO₂, the major sulfidation products were Ce₂O₂S and La₂O₂S, the XRD and SEM results revealed that ZSM-5 structure could remain intact during preparation and sulfidation process, the H₂-TPR showed that the reducibility of CeO₂ can be remarkably enhanced by addition of La.KeywordsZSM-5Rare EarthCeriumSorbentDesulfurization