Paper Information

Journal:   IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)   2003 , Volume 22 , Number 2; Page(s) 1 To 8.
 
Paper: 

EXTENSION OF LINEAR ISOTHERM REGULARITY TO LONG CHAIN ALKANES

 
 
Author(s):  PARSAFAR GH.A.*, KALANTAR Z.
 
* DEPARTMENT OF CHEMISTRY, SHARIF UNIVERSITY OF TECHNOLOGY, TEHRAN, I.R. IRAN
 
Abstract: 

In this work, we consider each normal alkane as a hypothetical mixture of methyl and methylene groups, in which the interaction potential of each pair is assumed to be the average effective pair potential. Then, the LIR equation of state (EOS) is extended for such a hypothetical mixture. Also, three basic compounds, namely, propane, n-butane and cyclohexane, are used to obtain the contribution of each carbonic group in the EOS parameters. Using the calculated EOS parameters along with the modified EOS, the density of n-alkanes and their mixtures at different pressures and temperatures are calculated. The average percentage error in density is found to be less than 1.5% for both the pure normal alkanes and their binary mixtures.

 
Keyword(s): EQUATION OF STATE, GROUP CONTRIBUTION METHOD, AVERAGE EFFECTIVE PAIR POTENTIAL
 
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