Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane

Kohei Urasaki, Yasushi Sekine, Sho Kawabe, Eiichi Kikuchi, Masahiko Matsukata*

*この研究の対応する著者

研究成果: Article査読

147 被引用数 (Scopus)

抄録

Steam reforming of methane for the purpose of hydrogen production was performed using nickel catalysts supported on a variety of perovskites, including LaAlO3, LaFeO3, SrTiO3, BaTiO 3, La0.4Ba0.6Co0.2Fe 0.8O3-8, to compare the catalytic activity and resistance to coking of these catalysts to those of the conventional Ni/α-Al 2O3 catalyst. Ni/LaAlO3 and Ni/SrTiO 3 showed high catalytic activities among the Ni/ perovskites and longer-term stabilities than the conventional catalyst. Temperature programmed oxidation of carbon deposited on used catalysts revealed that inactive carbon species detected on Ni/α-Al2O3 were not formed in the case of Ni/LaAlO3. The results of temperature programmed reduction confirmed that consumption and recovery of the lattice oxygen in perovskites occurred during the reaction, and that the reducibility of perovskites had a great impact on the steam reforming activity. The lattice oxygen in perovskites is considered to play important roles in promoting the oxidation of CH, fragments adsorbed on metallic nickel.

本文言語English
ページ(範囲)23-29
ページ数7
ジャーナルApplied Catalysis A: General
286
1
DOI
出版ステータスPublished - 2005 5月 26

ASJC Scopus subject areas

  • 触媒
  • プロセス化学およびプロセス工学

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