The heat capacity of 4-4′-dichlorobenzophenone

被引：0

作者：

Díaz-Hernández, J

López-Echarri, A

Ruiz-Larrea, I

Fraile-Rodriguez, A

Breczewski, T

机构：

[1] Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, Puebla 72000, Mexico

[2] Univ Basque Country, Fac Ciencias, Dept Fis Mat Condensada, Bilbao 48080, Spain

[3] Univ Basque Country, Fac Ciencias, Dept Fis Aplicada 2, Bilbao 48080, Spain

来源：

FERROELECTRICS | 2002年 / 268卷

关键词：

specific heat; phase transitions; dichlorobenzophenone;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The specific heat of 4,4'-dichlorobenzophenone has been measured by Adiabatic Calorimetry from 90 K to room temperature. As expected, two first order phase transitions were found at T-1 = 187 K and T-2 = 192 K, showing a noticeable thermal hysteresis of about 9degreesC, together with some thermal history effects. By means of a useful deconvolution of the specific heat curve, the values for the phase transition thermodynamic functions were obtained: DeltaH(1) = 39.6 J/mol, DeltaS(1) = 0.21 J/mol.K. DeltaH(2) = 467 J/mol, and DeltaS(2) = 2.41 J/mol.K.

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页码：333 / 338

页数：6

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