Adsorption of normal alkanes from isooctane solution onto crystalline urea

Experimental data are reported for the adsorption of four n-alkanes from isooctane solution onto crystalline urea. Equilibrium isotherms for n-dodecane, n-tetradecane, and n-hexadecane were obtained at 283, 295, and 303 K. The equilibrium adsorption data were correlated by the Langmuir, Freundlich, and BET isotherm equations. The kinetics of the adsorption of n-dodecane, n-tridecane, and n-tetradecane from isooctane solution onto crystalline urea were also studied at 283, 295, and 303 K. The kinetic data were used to calculate the diffusivities and the apparent energies of activation for the urea-n-alkane systems