Preparation and desulfurization performance of LaMeOx/SBA-15 for hot coal gas

B. S. Liu*, X. N. Wei, Y. P. Zhan, R. Z. Chang, Fazle Subhan, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)27-36
Number of pages10
JournalApplied Catalysis B: Environmental
Volume102
Issue number1-2
DOIs
Publication statusPublished - 1 Feb 2011

Scopus Subject Areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

User-Defined Keywords

  • Desulfurizers
  • Hot coal gas
  • Rare earth metal oxides
  • SBA-15

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