In situ synchrotron powder X-ray diffraction studies of the thermal decomposition of β- and γ-AlD3

被引：11
|
作者：
Grove, Hilde [1 ]
Sorby, Magnus H. [1 ]
Brinks, Hendrik W. [1 ]
Hauback, Bjorn C. [1 ]
机构：
[1] Inst Energy Technol, Dept Phys, NO-2027 Kjeller, Norway
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 44期
关键词：
D O I：
10.1021/jp075212y
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：
Details of the thermal decomposition of beta-AlD3 and gamma-AlD3 have been investigated by in situ synchrotron X-ray diffraction at a constant heating rate of 1 K/min and isothermally in dynamical vacuum. The beta-AlD3 transforms into alpha-AlD3 prior to decomposing to Al and D-2. The transformation into (alpha-AlD3 starts at about 80 degrees C, and the decomposition to Al and release of D2 starts at 130 degrees C. The transformation of gamma-AlD3 into (alpha-AlD3 starts at about 90 degrees C, and the sample decomposes to Al and D-2 at a higher temperature (from about 130 degrees C). From about 110 degrees C, gamma-AlD3 also decomposes directly into Al and D-2. Detailed analyses of the changes in unit cell dimensions during the decomposition for all phases have been performed in order to propose possible routes for the transitions.
引用
收藏
页码：16693 / 16699
页数：7
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