Oxidative steam reforming of ethanol for hydrogen production on M/Al 2O 3

Chih Cheng Hung; Shing Li Chen; Yi Kai Liao; Chih Hao Chen; Jeng Han Wang

doi:10.1016/j.ijhydene.2011.12.060

Oxidative steam reforming of ethanol for hydrogen production on M/Al ₂O ₃

Chih Cheng Hung
, Shing Li Chen
, Yi Kai Liao
, Chih Hao Chen
, Jeng Han Wang^*

^*Corresponding author for this work

Department of Chemistry

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

61 Citations (Scopus)

Abstract

In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H ₂O/ethanol and O ₂/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO ₂ on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H ₂O/ethanol and O ₂/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H ₂O and O ₂ efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO ₂-modified catalyst, which shows better oxygen storage capability.

Original language	English
Pages (from-to)	4955-4966
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	37
Issue number	6
DOIs	https://doi.org/10.1016/j.ijhydene.2011.12.060
Publication status	Published - 2012 Mar

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Ethanol
Hydrogenation
Oxidative steam reforming
Oxygen/ethanol ratio
Water/ethanol ratio

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

Access to Document

10.1016/j.ijhydene.2011.12.060

Cite this

@article{82e11c3d125e4ad995f792fe8e74924d,

title = "Oxidative steam reforming of ethanol for hydrogen production on M/Al 2O 3 ",

abstract = "In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H 2O/ethanol and O 2/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO 2 on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H 2O/ethanol and O 2/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H 2O and O 2 efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO 2-modified catalyst, which shows better oxygen storage capability.",

keywords = "Ethanol, Hydrogenation, Oxidative steam reforming, Oxygen/ethanol ratio, Water/ethanol ratio",

author = "Hung, \{Chih Cheng\} and Chen, \{Shing Li\} and Liao, \{Yi Kai\} and Chen, \{Chih Hao\} and Wang, \{Jeng Han\}",

note = "Funding Information: We are pleased to acknowledge the financial support from National Taiwan Normal University and the National Science Council , Taiwan, through contract number NSC98-2113-M-003-003-MY2 . We are grateful also for the XPS measurement from Prof. Wei-Hsiu Hung{\textquoteright}s group in National Taiwan Normal University. ",

year = "2012",

month = mar,

doi = "10.1016/j.ijhydene.2011.12.060",

language = "English",

volume = "37",

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journal = "International Journal of Hydrogen Energy",

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AU - Hung, Chih Cheng

AU - Chen, Shing Li

AU - Liao, Yi Kai

AU - Chen, Chih Hao

AU - Wang, Jeng Han

N1 - Funding Information: We are pleased to acknowledge the financial support from National Taiwan Normal University and the National Science Council , Taiwan, through contract number NSC98-2113-M-003-003-MY2 . We are grateful also for the XPS measurement from Prof. Wei-Hsiu Hung’s group in National Taiwan Normal University.

PY - 2012/3

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N2 - In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H 2O/ethanol and O 2/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO 2 on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H 2O/ethanol and O 2/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H 2O and O 2 efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO 2-modified catalyst, which shows better oxygen storage capability.

AB - In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H 2O/ethanol and O 2/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO 2 on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H 2O/ethanol and O 2/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H 2O and O 2 efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO 2-modified catalyst, which shows better oxygen storage capability.

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KW - Hydrogenation

KW - Oxidative steam reforming

KW - Oxygen/ethanol ratio

KW - Water/ethanol ratio

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