Hydrogen production by steam reforming of methane over mixed Ni/MgAl + CrFe3O4 catalysts

Na Young Kim, Eun Hyeok Yang, Sung Soo Lim, Jae Sun Jung, Jae Suk Lee, Gi Hoon Hong, Young Su Noh, Kwan Young Lee, Dong Ju Moon

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Steam reforming of methane (SRM) was performed over a mixed Ni/MgAl + CrFe3O4 catalyst. The catalyst was prepared by physical mixing method and it was compared to Ni/MgAl and iron or chromium promoted M/Ni/MgAl catalysts prepared by impregnation method. Catalysts were characterized by various analytical techniques such as nitrogen physisorption, TPR, XRD, TGA and SEM. The catalytic activity in a fixed-bed reactor was investigated at a temperature range of 500-700 °C, 1 bar pressure and feed molar ratio of H2O/CH4 = 2. TPR and XRD illustrated that segregated Ni particles were observed with promoted M-Ni/MgAl catalysts and it leads to reduce the active Ni metal. The addition of the Cr/Fe3O4 catalyst activates steam and easily reacts with methane. Consequently, physically mixed catalysts showed higher hydrogen selectivity and methane conversion than the other catalysts.

Original languageEnglish
Pages (from-to)11848-11854
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number35
DOIs
Publication statusPublished - 2015 Sep 21

Keywords

  • Hydrogen production
  • Physically mixed catalyst
  • Steam reforming
  • WGS reaction

ASJC Scopus subject areas

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

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