Industrial production of MgH2 and its application

被引：35

作者：

Uesugi, H. ^{[1
]}

Sugiyama, T. ^{[1
]}

Nii, H. ^{[1
]}

Ito, T. ^{[1
]}

Nakatsugawa, I. ^{[1
]}

机构：

[1] Fuji Kogyo Co Ltd, Fuji, Shizuoka, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷

关键词：

Magnesium hydride; Hydrogen generation; Hydrolysis; Fuel cell; HYDROGEN STORAGE;

D O I：

10.1016/j.jallcom.2010.11.047

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：

A process for the industrial production of magnesium hydride (MgH2) based on a thermal equilibrium method and its application to portable hydrogen sources is proposed. Mg powders and tablets compressed with mechanically ground Mg ribbons were successfully hydrogenated in a 50-.kg-.batch furnace. The resultant MgH2 showed a hydrogen yield of around 96% with good reproducibility. The compression ratio of Mg tablets was found to be an important factor in the hydrogenation yield. A hydrolysis technique using citric acid as an additive was employed to generate hydrogen under 373 K. Increasing the concentration of citric acid and the temperature accelerated the hydrolysis reactivity. A hydrogen reactor utilizing hydraulic head pressure was developed. It generated hydrogen continuously for 1 h at a flow rate of 100 ml min(-1) with hydrolysis of 5 g of tablet-.form MgH2. The conversion yield was around 70%, regardless of the flow rate. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：S650 / S653

页数：4

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