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Hydrogen generation by the reaction of Al with water using oxides as catalysts
Author(s) -
Gai WeiZhuo,
Fang ChunSheng,
Deng ZhenYan
Publication year - 2013
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3093
Subject(s) - hydroxide , catalysis , oxide , hydrogen , inorganic chemistry , hydrogen production , chemistry , reaction mechanism , chemical engineering , materials science , organic chemistry , engineering
SUMMARY Hydrogen generation by the reaction of pure Al powder in water with the addition of Al(OH) 3 , γ‐Al 2 O 3 , α‐Al 2 O 3 , or TiO 2 at mild temperatures was investigated. It was found that the reaction of Al with water is promoted and the reaction induction time decreases greatly by the above hydroxide and oxides. X‐ray diffraction analyses revealed that the hydroxide and oxide phases have no any change during the Al–water reaction, indicating that they are just as catalysts to assist the reaction of Al with water. A possible mechanism was proposed, which shows that hydroxide and oxides could dissociate water molecules and promote the hydration of the passive oxide film on Al particle surfaces. Copyright © 2013 John Wiley & Sons, Ltd.