Abstract
Hydriding characteristics of fluorinated LaNi4.7Al0.3 in hydrogen containing CH4, CO2 and CO were investigated by cyclic absorption-desorption tests and the purification efficiency at temperatures ⩽353.2 K were examined. Fluorinated alloys showed excellent tolerance to impurities, especially to the extremely poisonous CO. The alloy without treatment was completely deactivated after only a few hydriding/dehydriding cycles in hydrogen containing 300 ppm or 1000 ppm CO. However, the degradation of the hydriding reaction rate and hydrogen capacity of the fluorinated alloy was small. The gas chromatography measurements on hydrogen released from fluorinated alloys showed that the purity was higher than 99.9999% after a few percent release of hydrogen even for a high concentration of CO at low temperature. Based on these results, it is believed that practical hydride-based hydrogen purification from gas mixtures may be realizable by using fluorinated alloys.
Sign-in/Register to access full text options 
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.
