首页 | 本学科首页   官方微博 | 高级检索  
     


High temperature interaction of hydrogen with intermetallic compound CaNi5
Affiliation:1. Max Planck Institute for Biophysical Chemistry, Department of Molecular Biology, Am Fassberg 11, 37077 Göttingen, Germany;2. Max Planck Institute for Biophysical Chemistry, Bioanalytical Mass Spectrometry, Am Fassberg 11, 37077 Göttingen, Germany;3. University Medical Center Göttingen, Institute of Clinical Chemistry, Bioanalytics Group, Robert-Koch-Straße 40, 37075 Göttingen, Germany;2. Frederick University, Department of Mechanical Engineering, 7 Y. Frederickou Str., Pallouriotissa, 1036 Nicosia Cyprus;3. Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institute of Solar Research, Karl-Heinz-Beckurts-Str. 13, 52428 Jülich, Germany;4. National Centre of Scientific Research “Demokritos” (NCSRD), Patr. Gregoriou E'' & 27, Neapoleos Str., PO Box 60037, 15341, Agia Paraskevi, Athens, Greece;1. Department of Metallurgical and Materials Engineering, National Institute of Technology Srinagar, Jammu and Kashmir, India;2. Renewable and Sustainable Energy Research Center (RSERC), Technology Innovation Institute, Masdar City, Abu Dhabi, the United Arab Emirates
Abstract:The intermetallic compound CaNi5 disproportionates rapidly into CaH2 and Ni when treated with hydrogen above 350° C. The kinetics of this reaction in the initial stages follows the nucleation and growth mechanism. The pressure-composition-temperature isotherms for hydrogen interaction with CaNi5 in the temperature range 640°C to 725°C have been determined and the ΔHf for CaNi5 is calculated to be 12.9 kcal/mol. Differential thermal analysis confirms the scheme proposed for the CaNi5-H2 reaction. Even a 5% disproportionation of the alloy drastically affects the kinetics of hydrogen Sorption at room temperature.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号