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2014, Volume 8, Issue 2

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Frontiers of Chemical Science and Engineering >> 2014, Volume 8, Issue 2 doi: 10.1007/s11705-014-1420-3

Oxidation-extraction desulfurization of model oil over Zr-ZSM-5/SBA-15 and kinetic study

School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China

Available online: 2014-05-22
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Abstract

ZSM-5/SBA-15 composite molecular sieves were synthesized using post-synthesis method and characterized by X-ray diffraction and N adsorption-desorption. The oxidative-extration desulfurization of model oil was investigated by using hydrogen peroxide as the oxidant, tetrabutyl ammonium bromide as phase transfer catalyst, dimethyl sulfoxide as extractant, and Zr-ZSM-5/SBA-15, Ag-ZSM-5/SBA-15, Ce-ZSM-5/SBA-15 as catalyst. Under the optimal conditions, the desulfurization rate decreases in the order: Zr-ZSM-5/SBA-15>Ce-ZSM-5/SBA-15>Ag-ZSM-5/SBA-15. The highest desulfurization rate is 84.53% under the catalysis of Zr-ZSM-5/SBA-15. Kinetics analysis shows that the reaction is pseudo-first-order with the activation energy of 44.23 kJ/mol.

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