The heat capacity of Li2MoO4 in the temperature range 6–310 K

Musikhin, A.E.; Наумов, В. В.; Bespyatov, M.A.; Ivannikova, N. V.

doi:10.1016/j.jallcom.2015.03.159

Cited by 35 publications

(9 citation statements)

References 7 publications

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“…The experimental heat capacity of [Co(C 5 H 7 O 2 ) 2 ] 4 was smoothed using the Rumshisky procedure. , This method uses approximation by spline functions. More details of the smoothing procedure are presented in our previous work . The values of the smoothed heat capacity at the selected temperatures are presented in Table .…”

Section: Resultsmentioning

confidence: 99%

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Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Bespyatov

2020

J. Chem. Eng. Data

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Low-temperature heat capacity of tetrameric cobalt(II) acetylacetonate (tetrakis[bis(2,4-pentanedionato)cobalt(II)], [Co(C 5 H 7 O 2 ) 2 ] 4 ) was measured by an adiabatic method in a temperature range from 13.49 to 310.31 K. No phase transition-associated anomalies in the functional behavior of the heat capacity were detected in the entire tested temperature range. The obtained data were used to calculate the Debye characteristic temperature and integral thermodynamic functions (entropy, enthalpy, and reduced Gibbs energy) in a temperature range of 0 to 310 K. The absolute entropy values were used to calculate the formation entropy of [Co(C 5 H 7 O 2 ) 2 ] 4 at T = 298.15 K. A correlation was found between the unit cell volume, normalized to the number of molecules in this cell, and the heat capacity at T = 298.15 K.

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Section: Resultsmentioning

confidence: 99%

“…More details of the smoothing procedure are presented in our previous work. 25 The values of the smoothed heat capacity at the selected temperatures are presented in Table 3. Deviation of the experimental values from the smoothed curve is shown in Figure 5.…”

Section: Methodsmentioning

confidence: 99%

Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Bespyatov

2020

J. Chem. Eng. Data

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“…However, there are only estimated data for entropies of compounds Li 2 MoO 4 and Li 2 WO 4 in the literature . In the experimental study, the following value for the entropy of lithium molybdate single crystal was determined by low-temperature adiabatic calorimetry: S 0 (Li 2 MoO 4 , s, 298.15 K) = 135.87 ± 0.28 J K –1 mol –1 . On the basis of the values and data of the reference book, we estimated the entropies for investigated compounds: S 0 (Li 2 W 0.85 Mo 0.15 O 4 , s, 298.15 K) = 134.09 J K –1 mol –1 ; S 0 (Li 2 W 0.9 Mo 0.1 O 4 , s, 298.15 K) = 133.99 J K –1 mol –1 .…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Study of Lithium Tungstate Single Crystals Doped by Molybdenum (Li₂W_1–xMo_xO₄, x = 0.1 and 0.15)

et al. 2020

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The single crystals Li2W0.85Mo0.15O4 and Li2W0.9Mo0.1O4 have been grown by a low-temperature-gradient Czochralski technique as representatives of promising materials for scintillating cryogenic bolometers. Thermodynamic properties and their relationship with structural parameters to improve and extend the device portfolio with special emphasis on formation enthalpies, thermodynamic stability, and lattice enthalpies have been revealed. Solution enthalpies of Li2CO3, MoO3, and Li2W0.85Mo0.15O4 and Li2W0.9Mo0.1O4 single crystals have been measured in 0.40162 mol kg–1 aqueous KOH. The standard formation enthalpies (Δf H 0 (Li2W0.85Mo0.15O4, s, 298.15 K) = −1590.8 ± 2.0 kJ mol–1; Δf H 0 (Li2W0.9Mo0.1O4, s, 298.15 K) = −1594.1 ± 2.3 kJ mol–1), formation enthalpies from simple oxides, and lattice enthalpies have been determined. As a result, the dependences of formation enthalpies and lattice enthalpies for Li2W1–x Mo x O4 on tolerance factors have been found to be linear. It has been discovered that the thermodynamic stability and lattice enthalpies of Li2W1–x Mo x O4 are increased when the tolerance factor tends to one. It has been established that single crystals Li2W0.85Mo0.15O4 and Li2W0.9Mo0.1O4 are several times more thermodynamically stable than ZnMoO4 and CdWO4.

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“…The experimental data on heat capacity have been smoothed by the Rumshiskii method [18]. Deviation of the experimental values from the smoothed curve is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Low-temperature thermodynamic properties of Pt(C5H7O2)2

Bespyatov

Kuzin

Наумов

et al. 2015

J Therm Anal Calorim

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The heat capacity of Pt(C 5 H 7 O 2 ) 2 was measured in the temperature range (6-311) K by adiabatic calorimetry and found to be without transitions or thermal anomalies. The data obtained were used to calculate its thermodynamic functions (entropy, enthalpy, reduced Gibbs energy) in the range (0-310) K. They have the following values at 298.15 K: C p,m°= (292.8 ± 0.5) J mol -1 K -1 , D 0 298.15 S m°= (361.4 ± 0.9) J mol -1 K -1 , D 0 298.15H m°= (51.35 ± 0.09) kJ mol -1 , U m°= (189.2 ± 0.7) J mol -1 K -1 . The value of the absolute entropy was used to calculate the entropy of formation of Pt(C 5 H 7 O 2 ) 2 at T = 298.15 K.

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The heat capacity of Li2MoO4 in the temperature range 6–310 K

Cited by 35 publications

References 7 publications

Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Thermodynamic Study of Lithium Tungstate Single Crystals Doped by Molybdenum (Li₂W_1–xMo_xO₄, x = 0.1 and 0.15)

Low-temperature thermodynamic properties of Pt(C5H7O2)2

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The heat capacity of Li2MoO4 in the temperature range 6–310 K

Cited by 35 publications

References 7 publications

Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Low-Temperature Heat Capacity and Thermodynamic Functions of Tetrameric Cobalt(II) Acetylacetonate

Thermodynamic Study of Lithium Tungstate Single Crystals Doped by Molybdenum (Li2W1–xMoxO4, x = 0.1 and 0.15)

Low-temperature thermodynamic properties of Pt(C5H7O2)2

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Thermodynamic Study of Lithium Tungstate Single Crystals Doped by Molybdenum (Li₂W_1–xMo_xO₄, x = 0.1 and 0.15)