Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 3, Pages 2940-2949Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.01.009
Keywords
Renewable energy; Bioethanol; Hydrogen production; Steam reforming; Nickel catalyst; Zirconia
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Funding
- National Natural Science Foundation of China [21006068, 21050110425]
- Program for New Century Excellent Talents in University [NCET-04-0242]
- Seed Foundation of Tianjin University [60303002]
- Program of Introducing Talents of Discipline to Universities [B06006]
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Ni catalysts supported on ZrO2 with different crystalline phases and particle sizes were prepared to study the role of zirconia support in ethanol steam reforming for hydrogen production. Catalytic behavior of the catalysts was examined at relatively low temperature of 673 K with different contact times. The decrease in particle size of zirconia results in enhanced metal-support interaction, which accounts for the high activity of the catalyst. Regarding the impact of crystalline phase of zirconia on catalytic performance, tetragonal zirconia yields a higher activity in water gas shift reaction but a lower activity in methane steam reforming than that of monoclinic zirconia. Nevertheless, zirconia plays a secondary role in product distribution, especially at long contact times. Catalytic activity tests performed at elevated temperature demonstrated a high activity and stability of Ni/ZrO2 catalyst for hydrogen production from steam reforming of ethanol. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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