Solubility Prediction of High Molecular Weight n-Paraffins in Supercritical Carbon Dioxide

Iranian Journal of Chemistry & Chemical Engineering

Hamid Modarress¹  Navid Moradi Tehrani¹  Mohsen Mohsen Nia² 

[1] Department of Chemical Engineering, Amirkabir University of Technology, Tehran, I.R. IRAN;Thermodynamic Research Lab., Kashan University, Kashan, I.R. IRAN;

关键词: equation of state;    supercritical co2;    solubility;    high molecular weight hydrocarbons;   

DOI  :  

来源: DOAJ

【 摘 要 】

Solubility of high molecular weight n-paraffins in supercritical carbon dioxide has been a matter of interest to many researchers. However, not sufficient solubility experimental data are available although the methods by which the experimental data are obtained have many varieties. Utilizing cubic equations of state is an effective method for solubility prediction of n-paraffins in supercritical fluids. In this work, five cubic equations of state (EOS) are employed to predict the solubility of six high molecular weight n-paraffins: n-tetracosane, n-pentacosane, n-hexacosane, n-heptacosane, n-octacosane and n-nonacosane, in supercritical carbon dioxide. The EOSs used are van der Waals, Redlich-Kwong and MohsenNia-Modarress-Mansoori (MMM) as two-parameter EOSs and Soave and Peng-Robinson as three-parameter EOSs. The results show that the two-parameter MMM EOS is more accurate in solubility prediction than the other EOSs.

【 授权许可】

Unknown