Effect of Pt addition to Ni/La0.7Sr0.3AlO 3-δ catalyst on steam reforming of toluene for hydrogen production

Daiki Mukai, Yuki Murai, Takuma Higo, Shuhei Ogo, Yukihiro Sugiura, Yasushi Sekine

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Pt/Ni/La0.7Sr0.3AlO3-δ (Pt/Ni/LSAO) catalyst showed high catalytic activity and low coke formation for hydrogen production by steam reforming of toluene, even without pre-reduction. STEM-EDX and XAFS analyses revealed that Pt and Ni formed adjacent or alloy structure. Electron donation from supported Pt to Ni was observed by XPS observation, and the improvement of reducibility of Ni by Pt addition was observed by H 2-TPR. Catalytic activity of the reduced Ni was brought by the PtNi interaction. The impregnation order of Pt and Ni affected the catalytic activity and the amount of coke formation due to the difference of the structure of supported metals. Dilution effects of Pt on Ni metal and the contact between Ni and LSAO support apparently affect the suppression of coke formation.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalApplied Catalysis A: General
Volume471
DOIs
Publication statusPublished - 2014 Feb 10

Keywords

  • Alloy structure
  • Catalytic activity without pre-reduction
  • Electron donation
  • Low coke formation
  • Pt addition

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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