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

ZSM-5/SBA-15 composite molecular sieves were synthesized using post-synthesis method and characterized by X-ray diffraction and N 2 adsorption-desorption. The oxidative-extration desulfurization of model oil was investigated by using hydrogen peroxide as the oxidant, tetrabutyl ammonium bromide as p...

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Bibliographic Details
Published in:Frontiers of chemical science and engineering 2014, Vol.8 (2), p.203-211
Main Authors: Lu, Chuanzhu, Fu, Hui, Li, Huipeng, Zhao, Hua, Cai, Tianfeng
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Nanotechnology
Research Article
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Summary:ZSM-5/SBA-15 composite molecular sieves were synthesized using post-synthesis method and characterized by X-ray diffraction and N 2 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.
ISSN:2095-0179
2095-0187
DOI:10.1007/s11705-014-1420-3