Correlation of liquid heat capacities with a four-parameter corresponding states method

AIChE Journal ◽  
1976 ◽  
Vol 22 (4) ◽  
pp. 759-765 ◽  
Author(s):  
Thomas J. Lyman ◽  
Ronald P. Danner
Keyword(s):  
Heat Capacities ◽  
Corresponding States ◽  
Liquid Heat

An improved corresponding states method for liquid heat capacities

AIChE Journal ◽  
1977 ◽  
Vol 23 (6) ◽  
pp. 944-946 ◽  
Author(s):  
Ramanathan R. Tarakad ◽  
Ronald P. Danner
Keyword(s):  
Heat Capacities ◽  
Corresponding States ◽  
Liquid Heat

Heats of vaporization and gaseous heats of formation of some five- and six-membered ring alkenes

1979 ◽  
Vol 57 (17) ◽  
pp. 2302-2304 ◽  
Author(s):  
Richard Fuchs ◽  
L. Alan Peacock
Keyword(s):  
Gas Chromatography ◽  
Double Bond ◽  
Heat Capacities ◽  
Membered Ring ◽  
Heats Of Formation ◽  
Group Additivity ◽  
Liquid Heat ◽  
Heats Of Vaporization

The heats of vaporization of 1-methylcyclopentene, 3-methylcyclopentene, ethylidenecyclopentane, 1-ethylcyclopentene, methylenecyclohexane, allylcyclopentane, vinylcyclohexane, ethylidenecyclohexane, allylcyclohexane, 3,3-diethylpentane, 2,2,4,4-tetramethylpentane, and trans-2,2,5,5-tetramethyl-3-hexene have been measured by the gas chromatography – calorimetry method. These values have been combined with previously reported liquid heats of formation to give gaseous values of ΔHf. The results indicate that the internal double bond is favored by about 0.5 kcal over the exo in both 5- and 6-membered rings, but the endo–exo differences are much smaller than previously believed. Several of the liquid heat capacities that were measured were not well predicted by group additivity schemes.

Prediction of liquid heat capacities by the group contribution equation of state VTPR

2006 ◽  
Vol 248 (1) ◽  
pp. 56-69 ◽  
Author(s):  
Anja Diedrichs ◽  
Jürgen Rarey ◽  
Jürgen Gmehling
Keyword(s):  
Equation Of State ◽  
Heat Capacities ◽  
Group Contribution ◽  
Liquid Heat

scholarly journals Correlation of liquid heat capacities for fossil fuels using characterization data

Fuel ◽  
1988 ◽  
Vol 67 (1) ◽  
pp. 134-142 ◽  
Author(s):  
Patrick A. Rodgers ◽  
A.Louise Creagh ◽  
John M. Prausnitz
Keyword(s):  
Fossil Fuels ◽  
Heat Capacities ◽  
Liquid Heat

The heat capacities of certain liquids

1957 ◽  
Vol 239 (1217) ◽  
pp. 230-246 ◽  
Keyword(s):  
Heat Capacity ◽  
Carbon Tetrachloride ◽  
Carbon Disulphide ◽  
Heat Capacities ◽  
Constant Volume ◽  
Pressure Data ◽  
Different Temperatures ◽  
Structural Contribution ◽  
Liquid Heat ◽  
Total Heat Capacity

The heat capacities and adiabatic compressibilities of carbon tetrachloride, chloroform, methylene dibromide and m ethyl iodide have been measured between about — 30 and 30° C. The heat capacities at constant volume have been derived, and it is emphasized th a t these quantities apply to particular volumes existing at different temperatures. An isotherm for liquids, based on high-pressure data, has been used to obtain an expression for the effect of change of volume on the heat capacity at constant volume. This relation has been applied to mercury, carbon disulphide, carbon tetrachloride, chloroform and water. Satisfactory agreement has been obtained with the results found in other ways by Bridgman (1911, 1912) on mercury and water and by Gibson & Loeffler (1941) on carbon tetrachloride and water. From the results found in this work on the resolution of the various energy contributions to the liquid heat capacities of polyatomic molecules other than water, it is concluded that the concept of molecular rotation about a preferred axis can explain most of the facts established. There remains, however, a structural contribution to the total heat capacity which is approximately R cal mole -1 deg. -1 .

An empirical corresponding states relationship for the ratio of the heat capacities of polymers

1974 ◽  
Vol 25 (11) ◽  
pp. 638-640 ◽  
Author(s):  
R. W. Warfield ◽  
D. J. Pastine ◽  
M. C. Petree
Keyword(s):  
Heat Capacities ◽  
Corresponding States
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