Facile synthesis of nanosized sodium magnesium hydride, NaMgH3

Reardon, H., Mazur, N. and Gregory, D. H. (2013) Facile synthesis of nanosized sodium magnesium hydride, NaMgH3. Progress in Natural Science, 23(3), pp. 343-350. (doi:10.1016/j.pnsc.2013.05.003)

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The ternary magnesium hydride NaMgH3 has been synthesised via reactive milling techniques. The method employed neither a reactive H2 atmosphere nor high pressure sintering or other post-treatment processes. The formation of the ternary hydride was studied as a function of milling time and ball:powder ratio. High purity NaMgH3 powder (orthorhombic space group Pnma, a=5.437(2) Å, b=7.705(5) Å, c=5.477(2) Å; Z=4) was prepared in 5 h at high ball:powder ratios and characterised by powder X-ray diffraction (PXD), Raman spectroscopy and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDX). The products formed sub-micron scale (typically 200–400 nm in size) crystallites that were approximately isotropic in shape. The dehydrogenation behaviour of the ternary hydride was investigated by temperature programmed desorption (TPD). The nanostructured hydride releases hydrogen in two steps with an onset temperature for the first step of 513 K.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Reardon, Miss Hazel and Gregory, Professor Duncan
Authors: Reardon, H., Mazur, N., and Gregory, D. H.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Progress in Natural Science
ISSN (Online):1745-5391
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Progress in Natural Science 23(3):343-350
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
446531SUPERGEN programme renewalDuncan GregoryEngineering & Physical Sciences Research Council (EPSRC)EP/E040071/1CHEM - CHEMISTRY
557701Crossing Boundaries in Energy StorageDuncan GregoryEngineering & Physical Sciences Research Council (EPSRC)EP/I022570/1CHEM - CHEMISTRY