Hydrogen sorption properties of new magnesium intermetallic compounds with MgSnCu4 type structure
Matysina Z.A. Gavrylyuk N.A. Kartel M. Veziroglu A. Veziroglu T.N. Pomytkin A.P. Schur D.V. Ramazanov T.S. Gabdullin M.T. Zolotarenko A.D. Zolotarenko A.D. Shvachko N.A.
21 July 2021Elsevier Ltd
International Journal of Hydrogen Energy
2021#46Issue 5025520 - 25532 pp.
A statistical theory of the MgCeCo4–H2 system has been developed for hydrogenation and phase transitions under pressure. The free energy value is calculated. The equation of thermodynamic equilibrium is obtained. The temperature of the order-disorder phase transition is estimated. Isotherms and Isoplethes of hydrogen absorption-desorption are constructed. The possibility of a hysteresis effect is established. The temperature dependence of the hydrogen solubility is found taking into account the phase transition configuration heat capacity. The calculated and experimental graphs of the sorption isotherm are of a similar nature.
Hydrogen , Isotherm , Magnesium intermetallic compounds , Phase transitions
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Frantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky str., Kyiv, 03142, Ukraine
Chuiko Institute of Surface Chemistry, NAS of Ukraine, 17 General Naumov Str., Kyiv, 03680, Ukraine
University of Miami, International Association for Hydrogen Energy, 5794 SW 40 St. #303, Miami, 33155, FL, United States
National Nanotechnology Laboratory, Al-Farabi Kazakh National University, 71, Al-Farabi Str., Almaty, 050040, Kazakhstan
Kazakh-British Technical University (KBTU), 71, Al-Farabi Str., Almaty, 050040, Kazakhstan
Frantsevich Institute for Problems of Materials Science of NASU
Chuiko Institute of Surface Chemistry
University of Miami
National Nanotechnology Laboratory
Kazakh-British Technical University (KBTU)
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