Effect of pretreatment on the activity of Ni catalyst for CO removal reaction by water-gas shift and methanation

Sung Ho Kim, Suk Woo Nam, Tae Hoon Lim, Ho In Lee

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

An Ni metal catalyst manufactured by the tapecasting method for use as a structural catalyst did not exhibit catalytic activity for the carbon monoxide (CO) removal reaction. However, the catalyst pretreated by an oxidation and reduction process showed superior activity for CO removal via water-gas shift and methanation, resulting in a decrease of the CO concentration to below 1% in reformate gas. The catalytic activity was generated by the reorganization of the surface structure of Ni metal, and enhanced by surface oxygen intermediates such as Ni(OH)2 and NiOOH promoted by NiO oxidized incompletely after the pretreatment. After the reorganization process induced by the pretreatment, the Ni metal on the surface was converted to active Ni and NiO which played the role of a promoter.

Original languageEnglish
Pages (from-to)97-104
Number of pages8
JournalApplied Catalysis B: Environmental
Volume81
Issue number1-2
DOIs
Publication statusPublished - 2008 May 30

Keywords

  • Carbon monoxide
  • Disk type
  • Fuel processor
  • Methanation
  • Water-gas shift

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effect of pretreatment on the activity of Ni catalyst for CO removal reaction by water-gas shift and methanation'. Together they form a unique fingerprint.

  • Cite this