Skip to main content

Storage and separation of hydrogen with the metal steam process

Type of Publication
Year of Publication
2012
Authors

M. Thaler; V. Hacker

Abstract

The chemical reaction of metals and metal oxides with steam at elevated temperatures produces pure hydrogen. Therefore certain metals can be used as gas purification and hydrogen storage material. Storage and transport of metals are basic operations, free from safety issues and hydrogen is produced on demand whenever it is needed by passing steam over the solid reactant. Metal is commonly generated by the reduction of the corresponding metal oxide. Different routes like thermal reduction, carbothermic reduction or fused salt electrolysis are possible. In this paper metals are evaluated with regard to their applicability in the metal steam process upon thermodynamics and experimental investigations. Light metals with high oxygen bonding capacity were found to be promising materials for hydrogen storage due to their high storage density. Ge, Mo, W and Fe were found as potential candidates for the separation process with high hydrogen concentration in the product gas and excellent reduction and oxidation capability. However, reduction and oxidation at elevated temperatures cause the solid metals to reduce their surface area due to sintering. As a result the reaction rates decrease significantly after one redox cycle. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

DOI

10.1016/j.ijhydene.2011.06.119

Volume

37

Notes

Times Cited: 9 9

Pagination

2800-2806

Number
3
ISSN Number

0360-3199

We are professional and reliable provider since we offer customers the most powerful and beautiful themes. Besides, we always catch the latest technology and adapt to follow world’s new trends to deliver the best themes to the market.

Contact info

We are the leaders in the building industries and factories. We're word wide. We never give up on the challenges.

Recent Posts