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Гавричев, К. С.; Gorbunov, V. E.; Bakum, S. I.; Gurevich, V. M.; Изотов, А. Д.

doi:10.1023/a:1016228022379

Cited by 8 publications

(22 citation statements)

References 3 publications

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“…Results of the calculation proved to be in a satisfactory agreement with the experimental C P (T ) dependences from [3,4], but a noticeable systematic departure was observed in rather wide temperature intervals. To ascertain the origin of this discrepancy, we additionally measured the C P (T ) dependences of α-AlH 3 at 6-30 K and of both α-AlH 3 and α-AlD 3 at 130-320 K.…”

Section: Introductionsupporting

confidence: 56%

“…The area under the curves representing the three vibrational bands in figure 1(a) is accordingly normalized to 6, 12 and 6 states. [3] and open circles [4] and the data for AlD 3 by the solid circles [4]. The lower and upper dashed curves, respectively, represent the C V (T ) dependences for AlH 3 and AlD 3 calculated in this work using equation (1) and the g(ω) spectra constructed in [2] and displayed in figure 1.…”

Section: Resultsmentioning

confidence: 95%

“…The heat capacities of α-AlH 3 and α-AlD 3 were calculated as: figure 2 (dashed lines) together with the experimental C P (T ) data available in the literature [3,4].…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, α-AlH 3 is dielectric [1] so its heat capacity is fully determined by the phonon density of states, g (ω), where ω is the phonon frequency. A comparison of the heat capacities determined experimentally and calculated from the g(ω) can provide an independent 4 Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

“…The spectra of phonon density of states were earlier constructed for both α-AlH 3 and α-AlD 3 using inelastic neutron scattering [2]. The heat capacity at constant pressure, C P , was measured for α-AlH 3 at temperatures 30-298 K [3] and 15-300 K [4] and for α-AlD 3 at 15-340 K [4].…”

Section: Introductionmentioning

confidence: 99%

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Heat capacity of α-AlH₃and α-AlD₃at temperatures up to 1000 K

Antonov

Kolesnikov

Markushkin

et al. 2008

J. Phys.: Condens. Matter

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The densest α modification of AlH 3 and AlD 3 is thermodynamically stable at high hydrogen pressures. At ambient pressure, α-AlH 3 and α-AlD 3 rapidly and irreversibly decompose to Al and H 2 or D 2 gas when heated to about 420 and 520 K, respectively. In the present paper, the heat capacities at constant volume (C V ) and at constant pressure (C P ) are calculated for α-AlH 3 and α-AlD 3 at a pressure of 1 atm and temperatures 0-1000 K using the phonon densities of states determined earlier by inelastic neutron scattering at helium temperatures (Kolesnikov et al 2007 Phys. Rev. B 76 064302). The C P (T ) dependence of AlH 3 is also measured at temperatures 6-30 K and 130-320 K and that of AlD 3 at 130-320 K in order to compensate for the scatter in the literature data and to improve the accuracy of the calculated C V and C P dependences at low temperatures.

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Section: Introductionsupporting

confidence: 56%

Section: Resultsmentioning

confidence: 95%

“…The heat capacities of α-AlH 3 and α-AlD 3 were calculated as: figure 2 (dashed lines) together with the experimental C P (T ) data available in the literature [3,4].…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Heat capacity of α-AlH₃and α-AlD₃at temperatures up to 1000 K

Antonov

Kolesnikov

Markushkin

et al. 2008

J. Phys.: Condens. Matter

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Heat Capacity Function, Enthalpy of Formation and Absolute Entropy of Mg(AlH₄)₂

Habermann,

Wirth,

Burkmann

et al. 2024

ChemPhysChem

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In this investigation, we set out first to characterize the thermodynamics of Mg(AlH4)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(AlH4)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 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.

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