Abstract
AbstractAs described in previous chapters, high performance catalysts for decomposing ammonia to generate hydrogen are being developed vigorously. The generated hydrogen should be purified thoroughly before the use in fuel cells, especially in polymer electrolyte fuel cells (PEFC), which is most widely commercialized, and where the platinum (Pt) catalysts prone to be damaged by impurity gases are used. A prominent way to produce high purity hydrogen gas is based on hydrogen-selective membranes used to separate hydrogen from decomposed gas mixtures. Metallic membranes, which operate via a solution/diffusion mechanism, play a key role in the massive production of high purity hydrogen. At present, commonly and commercially used membranes for hydrogen separation are palladium (Pd) alloys. However, the excessive cost of palladium alloys limits its practical application on a large scale. Vanadium (V) has been proposed as promising alternatives to Pd alloys in view of its high hydrogen permeabilities. Here in this chapter, development situations of V membranes for hydrogen separation and purification are described. Mainly, outcomes of a JST-CREST project, “Development of Innovative Hydrogen Production Technology from Energy Carriers Based on Vanadium Alloy Membranes” are briefly introduced.KeywordsVanadiumPermeationDiffusionMembraneFuel cells
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
