Oxidative Steam Reforming of Methane over Ni Catalysts Modified with Noble Metals

• Tomishige Keiichi

  Institute of Materials Science, University of Tsukuba

Bibliographic Information

Other Title

• 貴金属修飾ニッケル触媒によるメタンの酸化的水蒸気改質反応

Abstract

The effects of addition of small amounts of noble metals such as Pt, Pd, and Rh to Ni/γ-Al₂O₃ and NiO-MgO solid solutions were investigated on the catalyst activation, catalyst bed temperature profile, and carbon formation behavior in oxidative steam reforming of methane. Addition of Pt and Pd by a sequential impregnation method to Ni/γ-Al₂O₃ had a much more remarkable effect than by a co-impregnation method on the resistance to deactivation by oxidation of Ni and suppression of hot-spot formation. Temperature-programmed reduction, extended X-ray absorption fine structure, and Fourier transform infrared spectroscopy suggested that the noble metal atoms introduced by the sequential impregnation method were preferably located on the surface to form an alloy. Addition of noble metals (Pt, Pd, and Rh) to Ni_0.2Mg_0.8O solid solution catalysts inhibited carbon formation in the oxidative steam reforming of methane under pressurized conditions.

Journal

• Journal of the Japan Petroleum Institute

  Journal of the Japan Petroleum Institute 50 (6), 287-298, 2007

  The Japan Petroleum Institute

Keywords

• Oxidative steam reforming
• Nickel catalyst
• Noble metal
• Self activation
• Hot spot
• Carbon deposition

Details

• CRID: 1390282680165048064
• NII Article ID: 10021125313
• NII Book ID: AA11590615
• DOI: 10.1627/jpi.50.287
• COI: 1:CAS:528:DC%2BD2sXht1Oqt7zK
• ISSN: 1349273X
• ISSN: 13468804
• NDL BIB ID: 9253867
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9253867
• Web Site: https://www.jstage.jst.go.jp/article/jpi/50/6/50_6_287/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed