Kinetics of Reactive Adsorption Desulfurization of Thiophene in n-Hexane over Oxides Adsorbent of NiO/ZnO-Al2O3-SiO2

The oxides adsorbent of NiO/ZnO-Al2O3-SiO2 was prepared by a co-precipitation method. The adsorbent can be used for the desulfurization of thiophene in n-hexane as model gasoline. Conditions of the reactive adsorption desulfurization in model gasoline were studied. Adsorption kinetics were found to follow a pseudo-first-order better than pseudo-second-order model. Equilibrium isotherms for the adsorption of thiophene over metal oxides adsorbents were analyzed by Freundlich and Langmuir isotherm models using a non-linear regression method. Further, Langmuir isotherm represented the equilibrium adsorption data best at all temperatures.