Synthesis of anodic alumina nickel catalysts and deactivation studies over them for methane steam reforming under accelerated degradation testing

Lu Zhou*, Yu Guo, Masayuki Yagi, Huabo Li, Jun Hatakeyama, Jian Chen, Yi Yao, Makoto Sakurai, Hideo Kameyama

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

An anodic alumina supported 17.9 wt% Ni catalyst shows an excellent catalytic performance during steam reforming of methane at 700°C under W/F = 6.33 × 10-3 g-cat·h/L, even when compared with some commercial Ni and Ru reforming catalysts. This is considered to be the result of the existence of an interfacial NiAl2O4 layer, which could anchor the top metallic nickel particles to prevent them from reacting with the alumina support and sintering, thereby, effectively suppressing carbon deposition. Nevertheless, for the industrialization of anodic nickel catalysts, some effort should be made to alleviate the deterioration of anodic supports, because when subjected to a higher W/F as 1.27 × 10-3 g-cat·h/L, the catalyst shows irreversible deactivation, and little improvement is seen by increasing nickel spinel content and metal loading or modifying the impregnation solution pH.

Original languageEnglish (US)
Pages (from-to)160-171
Number of pages12
JournalJournal of Chemical Engineering of Japan
Volume42
Issue number3
DOIs
StatePublished - Mar 20 2009

Keywords

  • Anodic alumina support
  • CH
  • Nickel catalyst
  • Spinel
  • Steam reforming

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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