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

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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.
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Keywords: adsorption kinetics; co-precipitation; desulfurization; non-linear regression; reactive adsorption

Document Type: Research Article

Affiliations: State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, China

Publication date: August 3, 2014

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