Steam reforming of alcohols for hydrogen production

Yong Wang; Cathy Chin; Robert Dagle; Hyun Seog Roh; David L. King; Jamie Holloday; Daniel Palo

Steam reforming of alcohols for hydrogen production

Yong Wang, Cathy Chin, Robert Dagle, Hyun Seog Roh, David L. King, Jamie Holloday, Daniel Palo

Division of Environmental Engineering

Research output: Contribution to journal › Conference article

Abstract

The role of catalyst support for ethanol steam reforming was studied using Rh as the active metal. Support identity rather than metal dispersion had significant effects on the activity with Rh/CeO₂-ZrO₂ exhibiting the best H₂ yield among the catalysts studied. In a subsequent series of experiments, the CeO₂-ZrO₂ support pre-calcination and catalyst calcination temperatures were systematically varied to evaluate the metal-support interaction and the related effects on H₂ yield. The support pre-calcination temperature was not a significant factor between 500° and 800°C despite the potential for sintering the CeO₂ phase. Acetaldehyde was a reaction intermediate and easily underwent a decarbonylation to form CH₄ and CO. Once CH₄ formed, high temperatures were required to reform it into CO and H₂. Therefore, to maximize H₂ formation, the CH₃ group (which is the precursor to CH₄) needs to be oxidized with steam before CH₄ is allowed to form. This is an abstract of a paper presented at the ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

Original language	English
Number of pages	1
Journal	ACS Division of Fuel Chemistry, Preprints
Volume	50
Issue number	2
Publication status	Published - 2005 Dec 1

All Science Journal Classification (ASJC) codes

Energy(all)

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Wang, Y., Chin, C., Dagle, R., Roh, H. S., King, D. L., Holloday, J., & Palo, D. (2005). Steam reforming of alcohols for hydrogen production. ACS Division of Fuel Chemistry, Preprints, 50(2).

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title = "Steam reforming of alcohols for hydrogen production",

abstract = "The role of catalyst support for ethanol steam reforming was studied using Rh as the active metal. Support identity rather than metal dispersion had significant effects on the activity with Rh/CeO2-ZrO2 exhibiting the best H2 yield among the catalysts studied. In a subsequent series of experiments, the CeO2-ZrO2 support pre-calcination and catalyst calcination temperatures were systematically varied to evaluate the metal-support interaction and the related effects on H2 yield. The support pre-calcination temperature was not a significant factor between 500° and 800°C despite the potential for sintering the CeO2 phase. Acetaldehyde was a reaction intermediate and easily underwent a decarbonylation to form CH4 and CO. Once CH4 formed, high temperatures were required to reform it into CO and H2. Therefore, to maximize H2 formation, the CH3 group (which is the precursor to CH4) needs to be oxidized with steam before CH4 is allowed to form. This is an abstract of a paper presented at the ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).",

author = "Yong Wang and Cathy Chin and Robert Dagle and Roh, {Hyun Seog} and King, {David L.} and Jamie Holloday and Daniel Palo",

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T1 - Steam reforming of alcohols for hydrogen production

AU - Wang, Yong

AU - Chin, Cathy

AU - Dagle, Robert

AU - Roh, Hyun Seog

AU - King, David L.

AU - Holloday, Jamie

AU - Palo, Daniel

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The role of catalyst support for ethanol steam reforming was studied using Rh as the active metal. Support identity rather than metal dispersion had significant effects on the activity with Rh/CeO2-ZrO2 exhibiting the best H2 yield among the catalysts studied. In a subsequent series of experiments, the CeO2-ZrO2 support pre-calcination and catalyst calcination temperatures were systematically varied to evaluate the metal-support interaction and the related effects on H2 yield. The support pre-calcination temperature was not a significant factor between 500° and 800°C despite the potential for sintering the CeO2 phase. Acetaldehyde was a reaction intermediate and easily underwent a decarbonylation to form CH4 and CO. Once CH4 formed, high temperatures were required to reform it into CO and H2. Therefore, to maximize H2 formation, the CH3 group (which is the precursor to CH4) needs to be oxidized with steam before CH4 is allowed to form. This is an abstract of a paper presented at the ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

AB - The role of catalyst support for ethanol steam reforming was studied using Rh as the active metal. Support identity rather than metal dispersion had significant effects on the activity with Rh/CeO2-ZrO2 exhibiting the best H2 yield among the catalysts studied. In a subsequent series of experiments, the CeO2-ZrO2 support pre-calcination and catalyst calcination temperatures were systematically varied to evaluate the metal-support interaction and the related effects on H2 yield. The support pre-calcination temperature was not a significant factor between 500° and 800°C despite the potential for sintering the CeO2 phase. Acetaldehyde was a reaction intermediate and easily underwent a decarbonylation to form CH4 and CO. Once CH4 formed, high temperatures were required to reform it into CO and H2. Therefore, to maximize H2 formation, the CH3 group (which is the precursor to CH4) needs to be oxidized with steam before CH4 is allowed to form. This is an abstract of a paper presented at the ACS Fuel Chemistry Meeting (Washington, DC Fall 2005).

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