Reaction intermediate species during the steam reforming of methanol over metal modified molybdenum carbide catalysts

Ji Cao, Yufei Ma, Guoqing Guan, Xiaogang Hao, Xuli Ma, Zhongde Wang, Katsuki Kusakabe, Abuliti Abudula

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

To understand steam reforming of methanol (SRM) reaction pathways over the surfaces of various metal-modified molybdenum carbides, the reaction intermediate species generated during the SRM reaction are investigated by using a temperature programmed surface reaction (TPSR) approach, in which a mass spectroscopy is applied to detect the produced species on-line. It is found that the reaction temperature affects the formation of different intermediate species over different catalysts. At the temperature lower than 180 °C, SRM reaction proceeds over Cu modified molybdenum carbide surface through formic acid (HCOOH) intermediate pathway, but at the temperature over 180 °C, the reactions over pure β-Mo2C, Ni, Cu and Pt modified molybdenum carbide surfaces proceed through methyl-formate (HCOOCH3) intermediate pathway. It is expected that these findings can help us to understand the mechanism on SRM reaction over molybdenum carbide based catalysts.

Original languageEnglish
Pages (from-to)12-18
Number of pages7
JournalApplied Catalysis B: Environmental
Volume189
DOIs
Publication statusPublished - 2016 Jul 15
Externally publishedYes

Keywords

  • Mechanism
  • Metal-modified molybdenum carbide
  • Molybdenum carbide
  • Reaction intermediate species
  • Steam reforming of methanol

ASJC Scopus subject areas

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

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