Tuesday, November 18, 2014

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

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

Type
Journal Article
Author
Chuanzhu Lu
Author
Hui Fu
URL
Volume
8
Issue
2
Pages
203-211
Publication
Frontiers of Chemical Science and Engineering
Date
2014/06/01
Abstract
Describes synthesis of ZSM-5/SBA-15 composite molecular sieves using post-synthesis method. Researchers studied the oxidative-extration desulfurization of model oil 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 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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