Investigation of dehydrogenation processes in disordered γ-Mg(BH4)2

被引：14

作者：

Guo, Sheng ^{[1
]}

Chan, Hoi Yan Lydia ^{[1
]}

Reed, Daniel ^{[1
]}

Book, David ^{[1
]}

机构：

[1] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 580卷

基金：

英国工程与自然科学研究理事会;

关键词：

Magnesium borohydride; Complex hydride; Hydrogen storage; Thermal decomposition; Ball milling; Raman spectroscopy; WELL-CRYSTALLIZED MG(BH4)(2); MAGNESIUM BOROHYDRIDE; RAMAN; TETRAHYDROBORATE; TEMPERATURE; DIFFRACTION; COMPLEXES; SPECTRA; H-2; IR;

D O I：

10.1016/j.jallcom.2013.02.114

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：

The structural and compositional properties of as-received and ball-milled gamma-Mg(BH4)(2) have been investigated, during heating. After transformation to the beta-phase (via unindexed epsilon-phase), the decomposition pathway of gamma-Mg(BH4)(2) is similar to that reported for alpha-Mg(BH4)(2). An amorphous Mg(BH4)(2) phase is produced after ball-milling (in 100 bar H-2) gamma-Mg(BH4)(2) for 2 h. This amorphous phase dehydrogenates via a different pathway with release of diborane. Various unknown compounds are observed in XRD and Raman spectra, which might be related to the formation of polyboranes during decomposition. Mg, B and finally MgB2 are observed during heating to 600 degrees C. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：S296 / S300

页数：5

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