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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