Steam treatment on Ni/γ-Al2O3 for enhanced carbon resistance in combined steam and carbon dioxide reforming of methane

In Hyuk Son, Seung Jae Lee, Aloysius Soon, Hyun Seog Roh, Hyunjoo Lee

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Coke deposition on reforming reaction catalysts, typically Ni particles deposited on alumina supports, has been a major obstacle barring their practical industrial application. In this work, a Ni/γ-Al2O3 catalyst was stabilized by a pretreatment with steam at high temperature of 850°C. The steam-treated Ni/γ-Al2O3 catalyst showed thermodynamically possible highest conversion (98.3% for methane and 82.4% for carbon dioxide) and H2/CO ratio of 2.01 for combined steam and carbon dioxide reforming of methane, and operated stably for 200h. The amount of deposited carbon coke was 3.6% for steam-treated catalysts whereas conventional catalysts had 15.4% of coke after 200h of the reaction. The steam pretreatment removed unstable aluminum that can otherwise leach out, which causes severe carbon deposition at the early stage of the reaction. This novel steam pretreatment enhanced the carbon resistance of the catalysts significantly, resulting in improved activity and long-term stability.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalApplied Catalysis B: Environmental
Volume134-135
DOIs
Publication statusPublished - 2013 May 2

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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