Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 34, Issue 13, Pages 5382-5389Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2009.04.054
Keywords
Ethanol; Dry reforming; Hydrogen; Thermodynamics; Carbon-free region
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Funding
- National High Technology Research and Development Program of China (863 Program) [2007AA05Z104, 2006AA0SZ115]
- Tianjin Natural Science Foundation [07JCZDJC00200]
- Science & Technology Development Center, SINOPEC of China [X504015]
- Talents of Discipline to Universities [B06006]
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Thermodynamics of ethanol reforming with carbon dioxide for hydrogen production has been studied by Gibbs free energy minimization method. The optimum conditions for hydrogen production are identified: reaction temperatures between 1200 and 1300 K and carbon dioxide-to-ethanol molar ratios of 1.2-1.3 at 0.1 MPa. Under the optimal conditions, complete conversion of ethanol, 94.75-94.86% yield of hydrogen and 96.77-97.04% yield of carbon monoxide can be achieved in the absence of carbon formation. The ethanol reforming with carbon dioxide is suitable for providing hydrogen-rich fuels for molten carbonate fuel cell and solid oxide fuel cell. The carbon-formed and carbon-free regions are found, which are useful in guiding the search for suitable catalysts for the reaction. Inert gases have a positive effect on the hydrogen and carbon monoxide yields. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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