Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst

Song Ho Cho, Jong Soo Park, Wang Lai Yoon, Ho Tae Lee, Seung Hoon Choi, Shin Kun Ryi, Sung Hyun Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The activities of Rh-Mg/Al2O3, Pt/ZrO2 and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh-Mg/Al2O3 was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh-Mg/Al2O3 and Pt/ZrO2 which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO2 at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh-Mg/Al2O3 catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalCatalysis Communications
Volume7
Issue number1
DOIs
Publication statusPublished - 2006 Jan

Keywords

  • Autothermal reforming
  • Hysterisis
  • Physically mixed catalyst
  • Pt/ZrO
  • Rh-Mg/AlO

ASJC Scopus subject areas

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

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