Molecular kinetic representations were used to develop the statistical theory of phase transformations of thermal decomposition of KAlH4 potassium alanate with formation of a more complex K3AlH6 alanate and KH potassium hydride and subsequent dehydrogenation of the latter accompanied with free hydrogen, pure potassium and aluminum yield. Temperature dependence of the emitted free hydrogen was established. Isotherms and isopleths were built. The possibility of hysteresis effect manifestation was established. The results of calculations were compared to the experimental data.
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P. Vajeeston, P. Ravindran, A. Kjekshus, and H. Fjellvåg, J. Alloys and Compd., 363, Issue 1–2, L7–L11 (2004).
O. M. Løvvik, O. Swang, and S. M. Opalka, J. Mater. Res., 20, Issue 20, 3199– 3213 (2005).
B. C. Hauback, H. W. Brinks, R. H. Heyn, et al., J. Alloys and Compd., 364, 35– 38 (2005).
M. Mamatha, C. Weidenthaler, A. Pommerin, et al., J. Alloys and Compd., 416, Issue 1–2, 303–314 (2006).
J. Graetz, Y. Lee, J. Reilly, et al., Phys. Rev. B., 71, Issue 18, 184115 (2005).
M. P. Pitt, P. E. Vullum, M. H. Sørby, et al., Acta Mater., 56, 4691–4701 (2008).
J. R. Ares, K.-F. Aguey-Zinsou, F. Leardini, et al., J. Phys. Chem. C., 113, 6845–6851 (2009).
I. P. Jain, P. Jain, and A. Jain, J. Alloys and Compd., 503, Issue 2, 303–339 (2010).
C. Rongeet, N. Scheerbaum, L. Schultz, and O. Gutfleisch, Acta Mater., 59, 1725–1733 (2011).
L. M. Arnbjerg and T. R. Jensen, Int. J. Hydrogen Energy, 37, Issue 1, 345–356 (2012).
E. G. Sorte, S. B. Emery, E. H. Majzoub, et al., J. Phys. Chem. C., 118, Issue 11, 5725–5732 (2014).
B. Bogdanovic, R. A. Brand, A. Marjanovic, et al., J. Alloys Compd., 302, P. 36–58 (2000).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 44–53, February, 2018.
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Matysina, Z.A., Zaginaichenko, S.Y., Schur, D.V. et al. Hydrogen Sorption Properties of Potassium Alanate. Russ Phys J 61, 253–263 (2018). https://doi.org/10.1007/s11182-018-1395-5
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DOI: https://doi.org/10.1007/s11182-018-1395-5