Heat Capacity Function, Enthalpy of Formation and Absolute Entropy of Mg(AlH 4 ) 2 .

Autor: Habermann F; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Wirth A; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Burkmann K; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Störr B; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Seidel J; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Gumeniuk R; TU Bergakademie Freiberg, Institut für Experimentelle Physik, Leipziger Str. 23, 09599, Freiberg., Bohmhammel K; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg., Mertens F; TU Bergakademie Freiberg, Institut für Physikalische Chemie, Leipziger Str. 29, 09599, Freiberg.
Jazyk: angličtina
Zdroj: Chemphyschem : a European journal of chemical physics and physical chemistry [Chemphyschem] 2024 Jan 15; Vol. 25 (2), pp. e202300748. Date of Electronic Publication: 2024 Jan 08.
DOI: 10.1002/cphc.202300748
Abstrakt: In this investigation, we set out first to characterize the thermodynamics of Mg(AlH 4 ) 2 and secondly to use the determined data to reevaluate and update existing estimation procedures for heat capacity functions, enthalpies of formation and absolute entropies of alanates. Within this study, we report the heat capacity function of Mg(AlH 4 ) 2 in the temperature range from 2 K to 370 K and its enthalpy of formation and absolute entropy at 298.15 K, being - 70 . 6 ± 3 . 6 ${ - 70.6 \pm 3.6}$  kJ mol -1 and 133.06 J (K mol) -1 , respectively. Using these values, we updated and expanded methods for the estimation of thermodynamic data of alanates.
(© 2023 The Authors. ChemPhysChem published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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