The effect of Zn addition into NiFe2O4 catalyst for high-temperature shift reaction of natural gas reformate assuming no external steam addition

Myung Suk Lee, Joon Yeob Lee, Dae Won Lee, Dong Ju Moon, Kwan Young Lee

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

In this study, the effect of the addition of Zn to a NiFe2O 4 catalyst was investigated for a high-temperature shift (HTS) of the natural gas reformate under the assumption that no external steam was added. In our previous study, NiFe2O4 proved to be a notable HTS catalyst, but it produced methane as a by-product in the presence of such a highly reductive reformate. In this study, we found that the addition of Zn to NiFe2O4 was effective in suppressing methanation as well as in promoting HTS activity. Such improvements were expected to be related to the enhanced redox property of the inverse-spinel species included in the catalyst. To elucidate the effects of Zn addition, inductively coupled plasma spectroscopy (ICP), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermo-gravimetric analysis under a CO gas atmosphere (CO-TGA), and temperature-programmed reduction of H2 (H2-TPR) were performed.

Original languageEnglish
Pages (from-to)11218-11226
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number15
DOIs
Publication statusPublished - 2012 Aug 1

Keywords

  • High-temperature shift
  • Methanation
  • Redox property
  • Water gas shift reaction
  • Zn/Ni/Fe catalyst

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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