Studies on dehydrogenation characteristic of Mg(NH2)2/LiH mixture admixed with vanadium and vanadium based catalysts (V, V2O5 and VCl3)

被引：69

作者：

Shahi, Rohit R. ^{[1
]}

Yadav, T. P. ^{[1
]}

Shaz, M. A. ^{[1
]}

Srivastva, O. N. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Hydrogen Energy Ctr, Dept Phys, Varanasi 221005, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 01期

关键词：

Hydrogen storage materials; Dehydrogenation kinetics; Activation energy; Mg(NH2)(2); VCl3; HYDROGEN-STORAGE MATERIALS; N-H SYSTEM; LITHIUM AMIDE; TRANSITION; MECHANISM; PROPERTY; IMIDE; LIH;

D O I：

10.1016/j.ijhydene.2009.10.029

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：

In the present study, we have investigated the effect of vanadium and its compounds (V, V2O5 and VCl3) on desorption characteristics of 1:2 magnesium amide (Mg(NH2)(2)) and lithium hydride (LiH) mixture. The hydrogen storage characteristics of 1:2 Mg(NH2)(2)/LiH mixture gets enhanced with admixing of V, V2O5 and VCl3 separately. The VCl3 has been found to be the most effective followed by V and V2O5. The activation energy for dehydrogenation process of 1:2 Mg(NH2)(2)/LiH mixture with and without catalyst has been evaluated using a method suggested by Ozawa et al. [25]. Based on the experimental results, schematic reaction scheme for decomposition of Mg(NH2)(2) in the presence of VCl3 has also been proposed. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：238 / 246

页数：9

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