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Thermodynamic properties of pentalead tris(vanadate) chloride

In the present work the temperature dependences of pentalead tris(vanadate) chloride heat capacity have been measured for the first time in the range from 7 to 350 K. The experimental data were used to calculate standard thermodynamic functions, namely the heat capacity C p ° ( T), enthalpy H°( T) −...

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Bibliographic Details
Published in:Thermochimica acta 2011-03, Vol.515 (1), p.79-83
Main Authors: Knyazev, A.V., Bulanov, E.N., Smirnova, N.N., Kuznetsova, N.Yu, Letyanina, I.A., Pryamova, E.D.
Format: Article
Language:English
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Summary:In the present work the temperature dependences of pentalead tris(vanadate) chloride heat capacity have been measured for the first time in the range from 7 to 350 K. The experimental data were used to calculate standard thermodynamic functions, namely the heat capacity C p ° ( T), enthalpy H°( T) − H°(0), entropy S°( T) − S°(0) and Gibbs function G°( T) − H°(0), for the range from T → 0 to 350 K. The differential scanning calorimetry in temperature interval 298–1473 K was applied to measure temperatures of phase transition and melting of compound under study. The high-temperature X-ray diffraction in range 298–1073 K was used for the determining thermal expansion coefficients.
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2010.12.026