Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide

Yohei Tanaka, Toshimasa Utaka, Ryuji Kikuchi, Tatsuya Takeguchi, Kazunari Sasaki, Koichi Eguchi

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

Cu/MnO catalysts prepared via reduction of Cu-Mn spinel oxide were investigated for development of active Cu catalysts for the water gas shift reaction (WGSR). A Cu-Mn catalyst active for the WGSR was obtained after high temperature calcination at 900°C and subsequent reduction. The optimum Cu/ Mn ratio for catalytic activity of the Cu-Mn oxide system was 1/2. Nonstoichiometric Cu1.5Mn1.5O4 phase existed stably when copper manganese oxide was calcined above 700°C. The optimized Cu-Mn spinel showed excellent WGSR activity when a larger percentage of CO was used, as in hydrocarbon reforming. Cu-Mn spinel oxides calcined above 900°C were easily reduced. This may be responsible for the high activity of the Cu/ MnO catalyst. Carbon dioxide in the reformed gas significantly depressed WGSR activity below 200°C, while CO conversion reached equilibrium at 200°C in the absence of CO2.

Original languageEnglish
Pages (from-to)271-278
Number of pages8
JournalJournal of Catalysis
Volume215
Issue number2
DOIs
Publication statusPublished - Apr 25 2003

Fingerprint

Water gas shift
Oxides
spinel
catalysts
Catalysts
oxides
shift
Carbon Monoxide
gases
water
Manganese oxide
Reforming reactions
Hydrocarbons
Carbon Dioxide
Calcination
manganese oxides
Copper
copper oxides
Catalyst activity
Carbon dioxide

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide. / Tanaka, Yohei; Utaka, Toshimasa; Kikuchi, Ryuji; Takeguchi, Tatsuya; Sasaki, Kazunari; Eguchi, Koichi.

In: Journal of Catalysis, Vol. 215, No. 2, 25.04.2003, p. 271-278.

Research output: Contribution to journalArticle

Tanaka, Yohei ; Utaka, Toshimasa ; Kikuchi, Ryuji ; Takeguchi, Tatsuya ; Sasaki, Kazunari ; Eguchi, Koichi. / Water gas shift reaction for the reformed fuels over Cu/MnO catalysts prepared via spinel-type oxide. In: Journal of Catalysis. 2003 ; Vol. 215, No. 2. pp. 271-278.
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AU - Sasaki, Kazunari

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N2 - Cu/MnO catalysts prepared via reduction of Cu-Mn spinel oxide were investigated for development of active Cu catalysts for the water gas shift reaction (WGSR). A Cu-Mn catalyst active for the WGSR was obtained after high temperature calcination at 900°C and subsequent reduction. The optimum Cu/ Mn ratio for catalytic activity of the Cu-Mn oxide system was 1/2. Nonstoichiometric Cu1.5Mn1.5O4 phase existed stably when copper manganese oxide was calcined above 700°C. The optimized Cu-Mn spinel showed excellent WGSR activity when a larger percentage of CO was used, as in hydrocarbon reforming. Cu-Mn spinel oxides calcined above 900°C were easily reduced. This may be responsible for the high activity of the Cu/ MnO catalyst. Carbon dioxide in the reformed gas significantly depressed WGSR activity below 200°C, while CO conversion reached equilibrium at 200°C in the absence of CO2.

AB - Cu/MnO catalysts prepared via reduction of Cu-Mn spinel oxide were investigated for development of active Cu catalysts for the water gas shift reaction (WGSR). A Cu-Mn catalyst active for the WGSR was obtained after high temperature calcination at 900°C and subsequent reduction. The optimum Cu/ Mn ratio for catalytic activity of the Cu-Mn oxide system was 1/2. Nonstoichiometric Cu1.5Mn1.5O4 phase existed stably when copper manganese oxide was calcined above 700°C. The optimized Cu-Mn spinel showed excellent WGSR activity when a larger percentage of CO was used, as in hydrocarbon reforming. Cu-Mn spinel oxides calcined above 900°C were easily reduced. This may be responsible for the high activity of the Cu/ MnO catalyst. Carbon dioxide in the reformed gas significantly depressed WGSR activity below 200°C, while CO conversion reached equilibrium at 200°C in the absence of CO2.

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