A novel polymorph of gadolinium tetrahydroborate produced by mechanical milling

被引：13

作者：

Andrade-Gamboa, J. ^{[1
,4
]}

Puszkiel, J. A. ^{[1
,2
,3
]}

Fernandez-Albanesi, L. ^{[1
,3
]}

Gennari, F. C. ^{[1
,2
,3
]}

机构：

[1] Ctr Atom Bariloche CNEA, San Carlos De Bariloche, Argentina

[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[3] Inst Balseiro, U N De Cuyo, Argentina

[4] Ctr Reg Univ Bariloche, U N Del Comahue, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 19期

关键词：

Hydrogen storage; Complex hydrides; Borohydrides; Composite powders; Mechanical milling; Phase transitions;

D O I：

10.1016/j.ijhydene.2010.07.147

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：

Gadolinium tetrahydroborate produced by mechanochemical processing of LiBH4-3GdCl(3) mixture exhibits a structural transformation at 484 K. The high-temperature structure has a type cubic structure Gd(BH4)(3) (a = 11.418 angstrom), which is isostructural with the one recently reported for Ce(BH4)(3). This new phase remains upon heating up to 503 K. Combination of thermal hydrogen desorption, DSC, PXRD and FTIR allows to determine that the thermal decomposition of high-temperature structure Gd(BH4)(3) starts above 503 K and leads to 3.1 wt% of hydrogen release obtaining mainly GdH2 as final decomposition product. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：10324 / 10328

页数：5

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