Improvement of Catalytic Activity of Ce-MFI-Supported Pd Catalysts for Low-Temperature Methane Oxidation by Creation of Concerted Active Sites

Ryota Osuga, Atsushi Neya, Motohiro Yoshida, Mizuho Yabushita, Shuhei Yasuda, Sachiko Maki, Kiyoshi Kanie, Toshiyuki Yokoi, Atsushi Muramatsu

研究成果: Article査読

抄録

Ce-containing MFI-type zeolite (Ce-MFI)-supported Pd catalysts modified by a second metal were prepared and applied to low-temperature oxidative coupling of methane reactions. Screening of various second metal species revealed that the combination of Pd and Co supported on Ce-MFI positively affected the catalytic performance and that the C2H6yield was improved compared with that for the control Ce-MFI-supported Pd catalyst. This benefit would arise from the creation of new active sites by the proximate Pd and Co species on Ce-MFI, as suggested by high-angle angular dark-field scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and H2-temperature-programmed reduction measurements. In addition, the highly dispersed Ce species in Ce-MFI, which were generated via the mechanochemical method, contributed to the creation of catalytically active sites, i.e., concerted Ce, Pd, and Co species.

本文言語English
ページ(範囲)9686-9694
ページ数9
ジャーナルIndustrial and Engineering Chemistry Research
61
27
DOI
出版ステータスPublished - 2022 7月 13

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学

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