Thermal desorption of hydrogen from magnesium hydride (MgH2): An in situ microscopy study by environmental SEM and TEM

被引：34
|
作者：
Beattie, Shane D. [1 ]
Setthanan, Uncharat [1 ]
McGrady, G. Sean [1 ]
机构：
[1] Univ New Brunswick, Dept Chem, Fredericton, NB E3B 5A3, Canada
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2011年 / 36卷 / 10期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Metal hydride; In situ; Electron microscopy; Transmission microscopy; Thermal properties; TRANSMISSION ELECTRON-MICROSCOPY; SORPTION KINETICS; STORAGE PROPERTIES; H-SORPTION; NB2O5; NANOPARTICLES; IMPROVEMENT; COMPOSITE; FE; NI;
D O I：
10.1016/j.ijhydene.2011.02.026
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
As-received magnesium hydride (MgH2), and MgH2 doped with lithium borohydride (LiBH4) and titanium (III) chloride (TiCl3) catalyst were heated - in situ - in an environmental scanning electron microscope (ESEM) and a transmission electron microscope (TEM). Morphological and structural changes during heating and hydrogen desorption were recorded in real time. The studies show that native MgH2 undergoes dramatic and destructive structural changes upon heating, whereas the doped/catalyzed MgH2 mixture showed a benign outgassing with little structural change. Videos of the morphological changes during heating can be viewed online at the McGrady group website: http://www.unb.ca/fredericton/science/chem/smcgrady/group/shanebeattie/InsituESEMandTEM-MgH2. html. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：6014 / 6021
页数：8
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