Additivity of Thermodynamic Properties of Organic Compounds in Crystalline State. 2. Heat Capacities and Enthalpies of Phase Transition of Alkyl Derivatives of Urea in Crystalline State

1995 ◽  
Vol 40 (2) ◽  
pp. 371-393 ◽  
Author(s):  
Gennady J. Kabo ◽  
Alexander A. Kozyro ◽  
Vladimir V. Diky ◽  
Vladimir V. Simirsky
Keyword(s):  
Phase Transition ◽  
Thermodynamic Properties ◽  
Organic Compounds ◽  
Crystalline State ◽  
Heat Capacities ◽  
Alkyl Derivatives ◽  
Derivatives Of

scholarly journals Heat Capacities and Thermodynamic Properties of Hungchaoite and Mcallisterite

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4470
Author(s):  
Jiangtao Song ◽  
Fei Yuan ◽  
Long Li ◽  
Yafei Guo ◽  
Tianlong Deng
Keyword(s):  
Phase Transition ◽  
Thermodynamic Properties ◽  
Thermodynamic Functions ◽  
Process Design ◽  
Chemical Engineering ◽  
Heat Capacities ◽  
Salt Lakes ◽  
Engineering Process ◽  
Thermal Anomalies ◽  
First Time

The heat capacities on two minerals of hungchaoite (MgB4O7·9H2O, Hu) and mcallisterite (MgB6O10·7.5H2O, Mc) have been measured with a precision calorimeter at temperatures ranging from 306.15 to 355.15 K, experimentally. It was found that there are no phase transition and thermal anomalies, and the molar heat capacities against temperature for the minerals of hungchaoite and mcallisterite were fitted as C p , m , Hu   =   − 27019.23675 + 229.55286 T   −   0.63912 T   2   +   ( 5.95862   ×   10   − 4 )   T   3 and C p , mMc   =   − 9981.88552   +   84.10964 T   −   0.22685 T   2   +   ( 2.0593   ×   10   − 4 )   T   3 , respectively. The molar heat capacities and thermodynamic functions of (HT-H298.15), (ST-S298.15), and (GT-G298.15) at intervals of 1 K for the two minerals were obtained for the first time. These results are significant in order to understand the thermodynamic properties of those minerals existing in nature salt lakes, as well as applying them to the chemical engineering process design.

scholarly journals Thermodynamic properties of organic compounds. 3. Sublimation enthalpy and heat capacities of 2,4,6-trimethylbenzonitrile N-oxide

1993 ◽  
Vol 38 (1) ◽  
pp. 101-104 ◽  
Author(s):  
William E. Acree ◽  
V. M. Sevruk ◽  
A. A. Kozyro ◽  
A. P. Krasulin ◽  
G. J. Kabo ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Organic Compounds ◽  
Heat Capacities ◽  
Sublimation Enthalpy

Ideal Bose Gas in Fractal Dimensions

1997 ◽  
Vol 07 (05) ◽  
pp. 1053-1058 ◽  
Author(s):  
Sang-Hoon Kim
Keyword(s):  
Phase Transition ◽  
Functional Analysis ◽  
Thermodynamic Properties ◽  
Three Dimensional ◽  
Fractal Dimensions ◽  
Bose Gas ◽  
Ideal System ◽  
Derivatives Of ◽  
Ideal Bose Gas ◽  
The Ideal

We extended the three dimensional ideal Bose gas theory into the fractal dimensions between 2 and 3. The thermodynamic properties and critical exponents of the ideal Bose gas are studied through the functional analysis of the Bose gas function in the fractal dimensions. The condensation and phase transition of the ideal system depend on its dimensions. The phase transition is detectable only in the sufficiently high derivatives of the specific heat function. The derivatives change discontinuously at values of the fractal dimensions which we have calculated.

Sign in / Sign up

Export Citation Format

Share Document