Catalytic performance and QXAFS analysis of Ni catalysts modified with Pd for oxidative steam reforming of methane

Yuya Mukainakano, Kaori Yoshida, Kazu Okumura, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Pd-Ni bimetallic catalysts prepared by co-impregnation and sequential impregnation methods were compared in the catalytic performance in oxidative steam reforming of methane. The sequential impregnation was more effective to the suppression of hot spot formation. According to the structural analysis by in situ quick-scanning X-ray absorption fine structure (QXAFS) during the temperature programmed reduction, the sequential impregnation method gave the bimetallic particles with higher Pd surface composition because of the low possibility of the Pd-Ni bond formation. Higher surface composition of Pd with higher reducibility than Ni is connected to the enhancement of the catalyst reducibility and the suppression of the hot spot formation.

Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalCatalysis Today
Volume132
Issue number1-4
DOIs
Publication statusPublished - 2008 Mar

Keywords

  • Catalyst reducibility
  • Hot spot
  • Ni
  • Oxidative reforming of methane
  • Pd
  • QXAFS
  • Steam reforming
  • Surface composition
  • Thermography

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Catalytic performance and QXAFS analysis of Ni catalysts modified with Pd for oxidative steam reforming of methane'. Together they form a unique fingerprint.

Cite this