Estimation of Critical and Thermophysical Properties of Saturated Cyclic Alkanes by Group Contributions

Group Contribution Methods (GCMs) of Marrero & Gani (M G), Constantinou (C G) and Lydersen (LYD) were employed in the prediction some critical thermophysical properties(TPPs), namely; temperature (Tc), pressure (Pc), volume (Vc), boiling (Tb) melting (Tm), for various cycloalkanes. The predicted properties compared with available experimental data. Experimental data T m unfortunately very scanty open literature; no comparison was done to appraise any methods. For Tc , LYD, C G M gave average relative deviation (ARD) values 0.02%, 1.57% 14.64%, respectively. In case Vc ARD are 2.6 %, 23.97 -4.53 Predicted P c using methods -31.55 -1.49 -277.98 recorded 0.63 % 10.30 Tb