Rate limiting steps of the phase transformations in Ti-doped NaAlH4 investigated by isotope exchange

被引：52
|
作者：
Lohstroh, W. [1 ]
Fichtner, M. [1 ]
机构：
[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.75.184106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The sorption kinetics of Ti-doped NaAlH4 has been investigated under the aspect of the replacement of hydrogen by deuterium. For both desorption and absorption, kinetics is found to be slower in the deuterated than in the protonated samples. Comparison of the apparent activation energies and the prefactors indicates that a hydrogen-containing species heavier than H determines the reaction rate.
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页数：6
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