Hydrogen generation and storage from hydrolysis of sodium borohydride in batch reactors

被引：109

作者：

Pinto, A. M. F. R. ^{[1
]}

Falcao, D. S. ^{[1
]}

Silva, R. A. ^{[1
]}

Rangel, C. M. ^{[1
]}

机构：

[1] Univ Porto, Dept Eng Quim, Ctr Estudos Fenomenos Transporte, P-4200465 Oporto, Portugal

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2006年 / 31卷 / 10期

关键词：

hydrogen generator; sodium borohydride; chemical hydride; fuel cell; hydrogen storage;

D O I：

10.1016/j.ijhydene.2005.11.015

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 catalytic hydrolysis of alkaline sodium borohydride (NaBH4) solution was studied using a non-noble; nickel-based powered catalyst exhibiting strong activity even after long time storage. This easy-to-prepare catalyst showed an enhanced activity after being recovered from previous use. The effects of temperature, NaBH4 concentration, NaOH concentration and pressure on the hydrogen generation rate were investigated. Particular importance has the effect of pressure, since the maximum reached pressure of hydrogen is always substantially lower than predictions (considering 100% conversion) due to solubility effects. The solubility of hydrogen is greatly enhanced by the rising pressure during reaction, leading to storage of hydrogen in the liquid phase. This effect can induce new ways of using this type of catalyst and reactor for the construction of hydrogen generators and even containers for portable and in situ applications. (c) 2005 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：1341 / 1347

页数：7

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