Catalytic effect of halide additives ball milled with magnesium hydride

被引：197

作者：

Malka, I. E. ^{[2
]}

Czujko, T. ^{[1
,2
]}

Bystrzycki, J. ^{[2
]}

机构：

[1] Nat Resources Canada, CanmetENERGY, Hydrogen Fuel Cells & Transportat Energy, Ottawa, ON K1A 1M1, Canada

[2] Mil Univ Technol, Dept Adv Mat & Technol, PL-00908 Warsaw, Poland

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 04期

关键词：

Hydrogen storage; Magnesium hydride; Halides; Ball milling; Catalysts; Dehydriding properties; HYDROGEN SORPTION KINETICS; H-SORPTION; DESORPTION PROPERTIES; NANOCRYSTALLINE MG; STORAGE; FE; NI; NANOPARTICLES; IMPROVEMENT; NBF5;

D O I：

10.1016/j.ijhydene.2009.12.024

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 influence of various halide additives milled with magnesium hydride (MgH2) on its decomposition temperature was studied. The optimum amount of halide additive and milling conditions were evaluated. The MgH2 decomposition temperature and energy of activation reduction were measured by temperature programmed desorption (TPD) and differential scanning calorimetry (DSC). The difference in catalytic efficiency between chlorides and fluorides of the various metals studied is presented. The effects of oxidation state, valence and position in the periodic table for selected halides on MgH2 decomposition temperature were also studied. The best catalysts, from the halides studied, for magnesium hydride decomposition were ZrF4, TaF5, NbF5, VCl3 and TiCl3 Crown Copyright (C) 2009 Published by Elsevier Ltd on behalf of Professor T. Nejat Veziroglu. All rights reserved.

引用

页码：1706 / 1712

页数：7

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