Hydrogen production and crystal structure of ball-milled MgH2-Ca and MgH2-CaH2 mixtures

被引：84

作者：

Tessier, JP

Palau, P

Huot, J

Schulz, R

Guay, D

机构：

[1] Univ Quebec, INRS Energie Mat & Telecommun, Lab Rech Mat Avances, Varennes, PQ J3X 1S2, Canada

[2] Inst Rech Hydro Quebec, Varennes, PQ J3X 1S1, Canada

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 376卷 / 1-2期

关键词：

chemical hydrides; nanocrystalline materials; hydrolysis; irreversible hydrides;

D O I：

10.1016/j.jallcom.2003.12.013

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 structure and hydrolysis reaction of ball-milled MgH2-Ca and MgH2-CaH2 mixtures was investigated in function of milling time and component proportion. The nanocomposites formed by milling show faster hydrolysis reaction as well as higher hydrogen yield compared to conventional polycrystalline materials. This improvement is due to the formation of calcium hydride upon milling and to the fine mixture that results from extensive milling. When the milling is performed on MgH2-20.3 mol% CaH2 mixtures, the reaction yield reaches 80% after 30 min of hydrolysis. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：180 / 185

页数：6

共 14 条

[1] Production of hydrogen gas from novel chemical hydrides [J].