期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 102, 期 1-2, 页码 27-36出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2010.11.020
关键词
Desulfurizers; Hot coal gas; SBA-15; Rare earth metal oxides
资金
- National Natural Science Foundation of China
- BAOSTEEL Group Corporation [50876122]
LaMeOx/SBA-15 (Me = Zn, Co and Fe) desulfurizers were synthesized by a sol-gel method and their performance for H2S removal from hot coal gas was investigated. The results of eight successive desulfidation-regeneration cycles revealed that the LaFeO3/SBA-15 desulfurizer shows high performance and stability for H2S removal. The results of BET, XPS, HRTEM and XRD characterization suggested that the SBA-15 structure of used LaMeOx/SBA-15 remained intact. It was found that there is only partial reduction of Fe3+ ions in LaFeO3/SBA-15 by hydrogen in hot coal gas, a factor considered to be favorable for LaFeO3/SBA-15 sulfidation. The metal oxides supported on SBA-15 can effectively suppress mechanical disintegration and improve stability of LaMeOx/SBA-15. Among the three desulfurizers, LaFeO3/SBA-15 performs the best. (C) 2010 Elsevier B.V. All rights reserved.
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