Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 35, Issue 2, Pages 445-451Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2009.10.095
Keywords
Hydrogen production; Sulfur-iodine cycle; Hydrogen iodide; Platinum-ceria-zirconia
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Funding
- Zhejiang Provincial Natural Science Foundation of China [Y106538]
- National High Technology Research and Development Program of China (863 Program) [2008AA05Z103]
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In this study, Pt/Ce1-xZrx catalysts with different Zr mole concentration (x = 0, 0.2, 0.5, 0.8, 1) have been tested to evaluate their effects on hydrogen iodide (HI) decomposition for hydrogen production in the sulfur-iodine (SI or IS) cycle at various temperatures. The Pt/Ce1-xZrx catalysts strongly enhanced the HI conversion to H-2 by comparison with blank test, especially the Pt/Ce0.8Zr0.2 catalyst. BET, XRD, TEM, EDS, TPR were performed for catalysts characterization. It was found that, through introducing ZrO2 into Pt/CeO2, a synergistic effect between Pt and CeO2-ZrO2 solid solution was different from Pt and CeO2 yield, such as improvement of the thermal stability and increase of Pt-O-Ce reducibility. Among the three samples containing Zr, the one with 20 mol% displayed the best activity for hydrogen production. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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