Novel CeO2 supported Ni-Rh bimetallic catalysts for reforming of bio-ethanol to produce hydrogen for fuel cells

Junichiro Kugai; S. Velu; Chunshan Song

Novel CeO2 supported Ni-Rh bimetallic catalysts for reforming of bio-ethanol to produce hydrogen for fuel cells

Junichiro Kugai, S. Velu, Chunshan Song

Research output: Contribution to journal › Article › peer-review

Abstract

A novel highly efficient catalyst system for the on-board reforming of bio-ethanol to produce fuel cell grade H₂ gas at relatively lower temperature was presented. The effect of combination of rhodium and nickel and the nature of support on the catalytic performance in the steam reforming and oxidative steam reforming of ethanol were studied for the first time over these catalysts. Rhodium was more active than nickel in the low temperature range though nickel became as active as rhodium in the high temperature range. H₂, CO, CO₂ and CH₄ were the main products and acetaldehyde was only produced at 335.6°C, which is insufficient for complete C-C bond cleavage. Higher selectivity of H₂ was observed for Rh/CeO₂ catalyst despite the highest ethanol conversion obtained over Rh-Ni/CeO₂. At 335°C, the selectivity for CO₂ decreased in the order, Ni/CeO₂ > Rh-Ni/CeO₂ > Rh/CeO₂.

Original language	English (US)
Pages (from-to)	754-755
Number of pages	2
Journal	Am Chem Soc Div Fuel Chem Prepr
Volume	48
Issue number	2
State	Published - Sep 2003

All Science Journal Classification (ASJC) codes

Energy(all)

Cite this

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title = "Novel CeO2 supported Ni-Rh bimetallic catalysts for reforming of bio-ethanol to produce hydrogen for fuel cells",

abstract = "A novel highly efficient catalyst system for the on-board reforming of bio-ethanol to produce fuel cell grade H2 gas at relatively lower temperature was presented. The effect of combination of rhodium and nickel and the nature of support on the catalytic performance in the steam reforming and oxidative steam reforming of ethanol were studied for the first time over these catalysts. Rhodium was more active than nickel in the low temperature range though nickel became as active as rhodium in the high temperature range. H2, CO, CO2 and CH4 were the main products and acetaldehyde was only produced at 335.6°C, which is insufficient for complete C-C bond cleavage. Higher selectivity of H2 was observed for Rh/CeO2 catalyst despite the highest ethanol conversion obtained over Rh-Ni/CeO2. At 335°C, the selectivity for CO2 decreased in the order, Ni/CeO2 > Rh-Ni/CeO2 > Rh/CeO2.",

author = "Junichiro Kugai and S. Velu and Chunshan Song",

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AU - Kugai, Junichiro

AU - Velu, S.

AU - Song, Chunshan

PY - 2003/9

Y1 - 2003/9

N2 - A novel highly efficient catalyst system for the on-board reforming of bio-ethanol to produce fuel cell grade H2 gas at relatively lower temperature was presented. The effect of combination of rhodium and nickel and the nature of support on the catalytic performance in the steam reforming and oxidative steam reforming of ethanol were studied for the first time over these catalysts. Rhodium was more active than nickel in the low temperature range though nickel became as active as rhodium in the high temperature range. H2, CO, CO2 and CH4 were the main products and acetaldehyde was only produced at 335.6°C, which is insufficient for complete C-C bond cleavage. Higher selectivity of H2 was observed for Rh/CeO2 catalyst despite the highest ethanol conversion obtained over Rh-Ni/CeO2. At 335°C, the selectivity for CO2 decreased in the order, Ni/CeO2 > Rh-Ni/CeO2 > Rh/CeO2.

AB - A novel highly efficient catalyst system for the on-board reforming of bio-ethanol to produce fuel cell grade H2 gas at relatively lower temperature was presented. The effect of combination of rhodium and nickel and the nature of support on the catalytic performance in the steam reforming and oxidative steam reforming of ethanol were studied for the first time over these catalysts. Rhodium was more active than nickel in the low temperature range though nickel became as active as rhodium in the high temperature range. H2, CO, CO2 and CH4 were the main products and acetaldehyde was only produced at 335.6°C, which is insufficient for complete C-C bond cleavage. Higher selectivity of H2 was observed for Rh/CeO2 catalyst despite the highest ethanol conversion obtained over Rh-Ni/CeO2. At 335°C, the selectivity for CO2 decreased in the order, Ni/CeO2 > Rh-Ni/CeO2 > Rh/CeO2.

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JO - Am Chem Soc Div Fuel Chem Prepr

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Novel CeO2 supported Ni-Rh bimetallic catalysts for reforming of bio-ethanol to produce hydrogen for fuel cells

Abstract

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