Advanced titanium doping of sodium aluminum hydride: segue to a practical hydrogen storage material?

被引：221

作者：

Jensen, CM

Zidan, R

Mariels, N

Hee, A

Hagen, C

机构：

[1] Univ Hawaii, Dept Chem, Honolulu, HI 96822 USA

[2] Univ Hawaii, Hawaii Nat Energy Inst, Honolulu, HI 96822 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1999年 / 24卷 / 05期

关键词：

D O I：

10.1016/S0360-3199(98)00092-5

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 dehydrogenation kinetics of NaAlH4 have been enhanced far beyond those previously achieved upon titanium doping of the host hydride. Homogenization of NaAlH4 with 2 mole % Ti(OBun)(4) under an atmosphere of argon produces a novel material which contains only traces of carbon. TPD measurements show that the dehydrogenation of this material occurs about 30 degrees C lower than that previously found for NaAlH4 doped with titanium through wet chemistry methods. The novel titanium containing material can be rehydrided under 1600 psi of hydrogen pressure at 200 degrees C. In further contrast to 'wet doped' NaAlH4, the dehydrogenation kinetics observed for the novel material are undiminished over several dehydriding/hydriding cycles. (C) 1999 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：461 / 465

页数：5