Lithium-catalyzed dehydrogenation of ammonia borane within mesoporous carbon framework for chemical hydrogen storage

Li, Li, Yao, Xiangdong, Sun, Chenghua, Du, Aijun, Cheng, Lina, Zhu, Zhonghua, Yu, Chengzhong, Zou, Jin, Smith, Sean C., Wang, Ping, Cheng, Hui-Ming, Frost, Ray L., & Lu, Gao Qing (Max) (2009) Lithium-catalyzed dehydrogenation of ammonia borane within mesoporous carbon framework for chemical hydrogen storage. Advanced Functional Materials, 19(2), pp. 265-271.

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Ammonia borane (AB) has attracted tremendous interest for on-board hydrogen storage due to its low molecular weight and high gravimetric hydrogen capacity below a moderate temperature. However, the slow kinetics, irreversibility, and formation of volatile materials (trace borazine and ammonia) limit its practical application. In this paper, a new catalytic strategy involved lithium (Li) catalysis and nanostructure confinement in mesoporous carbon (CMK-3) for the thermal decomposition of AB is developed. AB loaded on the 5% Li/CMK-3 framework releases 7 wt % of hydrogen at a very low temperature (around 60 °C) and entirely suppresses borazine and ammonia emissions that are harmful for proton exchange membrane fuel cells. The possible mechanism for enhanced hydrogen release via catalyzed thermal decomposition of AB is discussed.

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100 citations in Scopus
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97 citations in Web of Science®

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ID Code: 17547
Item Type: Journal Article
Refereed: Yes
Keywords: Ammonia borane, Hydrogen storage, Catalysis, Fuel cells
DOI: 10.1002/adfm.200801111
ISSN: 1616-301X
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Past > Schools > School of Physical & Chemical Sciences
Deposited On: 15 Feb 2009 23:55
Last Modified: 08 Jul 2013 22:48

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