Synergistic effect of Pd and Ni on resistance to carbon deposition over NiO-MgO solid solution supported Pd catalysts in oxidative steam reforming of methane under pressurized conditions

Mohammad Nurunnabi, Shigeru Kado, Kimihito Suzuki, Ken ichiro Fujimoto, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Effect of Pd loading to NiO-MgO solid solution was investigated on catalytic activity and inhibition of carbon deposition in oxidative steam reforming of methane. Under atmospheric pressure, Pd/Ni0.2Mg0.8O exhibited much higher methane conversion than Ni0.2Mg0.8O and Pd/MgO catalysts by the enhancement of reduction degree of Ni and the formation of Pd-Ni alloy. Under pressurized conditions, 0.1% Pd/Ni0.2Mg0.8O catalyst showed high and stable activity; and the amount of deposited carbon was negligible. In contrast, the deactivation was clearly observed over Ni0.2Mg0.8O, Pd/MgO and other Pd/Ni0.2Mg0.8O catalysts, and the deactivation rate was closely related to the amount of deposited carbon.

Original languageEnglish
Pages (from-to)488-493
Number of pages6
JournalCatalysis Communications
Volume7
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1
Externally publishedYes

Keywords

  • Carbon deposition
  • Deactivation
  • Methane
  • Ni
  • Oxidative reforming
  • Pd
  • Steam reforming

ASJC Scopus subject areas

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

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