Issue 44, 2009

Ambient temperature hydrogen desorption from LiAlH4–LiNH2 mediated by HMPA

Abstract

By adding a small amount of HMPA approximately 2.5 equivalent or ca. 8.1 wt% H2 can be released from the LiAlH4–LiNH2 mixture at ambient temperature, which is ∼370 °C lower than the corresponding solid-state dehydrogenation. NMR characterizations reveal the formation of intermediates, such as [AlH] and [AlN] species, during the dehydrogenation. LiNH2 induces the enrichment of [AlH] species in the liquid phase which further reacts with LiNH2 to produce H2, Li2NH and Al.

Graphical abstract: Ambient temperature hydrogen desorption from LiAlH4–LiNH2 mediated by HMPA

Article information

Article type
Paper
Submitted
03 Aug 2009
Accepted
10 Sep 2009
First published
01 Oct 2009

J. Mater. Chem., 2009,19, 8426-8431

Ambient temperature hydrogen desorption from LiAlH4–LiNH2 mediated by HMPA

X. Zheng, W. Xu, Z. Xiong, Y. Chua, G. Wu, S. Qin, H. Chen and P. Chen, J. Mater. Chem., 2009, 19, 8426 DOI: 10.1039/B915851K

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