Deactivation of SiO2 supported Ni catalysts by structural change in the direct internal reforming reaction of molten carbonate fuel cell

Won Jun Jang, Hak Min Kim, Jae Oh Shim, Seong Yeun Yoo, Kyung Won Jeon, Hyun Suk Na, Yeol Lim Lee, Da We Lee, Hyun Seog Roh, Wang Lai Yoon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A direct internal reforming (DIR) reaction for a molten carbonate fuel cell (MCFC) is carried out using SiO2 supported catalysts, which are known to be a highly stable in catalytic reactions. The SiO2 supported Ni catalysts rapidly deactivate in DIR-MCFC. To elucidate the mechanism of the catalyst deactivation, various characteristic analyses (XRD, BET, H2-chemisorption, FT-IR, and SEM) of calcined and used catalysts are employed. The co-existence of H2O and K causes the formation of the non-active nickel oxide and silica hydrate resulting in the significant decrease of Ni dispersion and BET surface area.

Original languageEnglish
Pages (from-to)44-47
Number of pages4
JournalCatalysis Communications
Volume101
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

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

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