TY - JOUR ID - 80637 TI - A Molecular-Based Equation of State for Vapour-liquid Equilibrium of Pure Substances JO - Physical Chemistry Research JA - PCR LA - en SN - 2322-5521 AU - Mousazadeh, Mohammad Hassan AD - Department of Chemistry, Amirkabir University of Technology Y1 - 2019 PY - 2019 VL - 7 IS - 1 SP - 95 EP - 109 KW - Equation of state KW - Statistical mechanics KW - Polar fluids KW - the Reduced dipole moment KW - Molecular thermodynamics DO - 10.22036/pcr.2018.144626.1523 N2 - A semi-empirical equation of state has been studied for modelling vapour-liquid data of pure substances. The specific molecular based equation of state is employed here as basis because of its mathematical simplicity. The semi-empirical extension has been accomplished to real fluids by correlating the density dependence of the attraction term to vapour liquid data of a reference fluid. The resulting attraction term is mathematically relatively simple and fulfills the topological requirements given by the physical background. With this model vapour-liquid equilibrium data for pure substances have been correlated. The investigated systems include n-alkanes, 1-alkanols, acetone and carbon dioxide. The results are compared with those obtained by PR (Peng-Robinson), SRK (Soave-Redlich-Kwon) and RM (Riazi-Mansoori) equations of state. UR - https://www.physchemres.org/article_80637.html L1 - https://www.physchemres.org/article_80637_e5888638165613733aeb8d3fb69ef9cd.pdf ER -