Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 40, Issue 2, Pages 1047-1053Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2014.11.065
Keywords
Hydrogen storage; Ammonia borane; Aluminum hydride; Mutual enhancement
Categories
Funding
- National Natural Science Foundation of China [21271046, 51471053]
- Ph.D. Programs Foundation of Ministry of Education of China [20110071110009]
- Science and Technology Commission of Shanghai Municipality [11JC1400700]
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Destabilized by aluminum hydride, the dehydrogenation properties of ammonia borane (AB) can be improved significantly, including enhanced dehydrogenation kinetics, reduced induction period and suppressed formation of volatile byproducts. Furthermore, a lowered dehydrogenation temperature was also achieved for AlH3, indicating a mutual dehydrogenation enhancement for both AB and AlH3 in this mixture. The destabilized sample, 3AB/AlH3,can totally release more than 12 wt% of high-pure hydrogen (>99 wt%) without any detectable by-products below 250 degrees C. Mechanism investigations indicated that the mutual dehydrogenation enhancement in the mixture is attributed to the Coulombic attraction between the hydridic H delta- in AlH3 and the protonic H delta+ in the NH3 group of AB. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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