Catalytic performance and characterization of Co/Mg/Al catalysts prepared from hydrotalcite-like precursors for the steam gasification of biomass

Lei Wang, Dalin Li, Hideo Watanabe, Masazumi Tamura, Yoshinao Nakagawa, Keiichi Tomishige

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The Co/Mg/Al catalysts were prepared from the hydrotalcite-like compounds containing Co, Mg and Al, and applied to the steam gasification of biomass. It is found that the Co/Mg/Al (10/40/50) catalyst exhibited much higher activity and resistance to coke deposition than Co/α-Al2O3, Co/Al, Co/Mg and Ni/Mg/Al (9/66/25) catalysts. The catalyst characterization using BET, TPR, TPO, XRD, H2 adsorption, and TEM indicates that the Co/Mg/Al (10/40/50) catalyst after the reduction has a nanocomposite structure of Co metal particles (~14nm) and oxide particles (~16nm) of MgAl2O4-based solid solution. On the other hand, according to the catalyst characterization after the catalytic use and regeneration, the structural change of MgAl2O4-based solid solution to MgO-based solid solution can be a cause of the decrease of the catalytic activity.

Original languageEnglish
Pages (from-to)82-92
Number of pages11
JournalApplied Catalysis B: Environmental
Volume150-151
DOIs
Publication statusPublished - 2014 May 5

Keywords

  • Biomass
  • Cobalt
  • Hydrotalcite
  • Steam gasification
  • Tar

ASJC Scopus subject areas

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

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