Liquid-phase Oxidative Desulfurization of Dibenzothiophene Catalyzed by Silica-supported Ammonium Molybdophosphate Catalyst

Petroleum Science and Technology, Volume 32, Issue 9, 2014, pages 1072-1078
Liquid-phase Oxidative Desulfurization of Dibenzothiophene Catalyzed by Silica-supported Ammonium Molybdophosphate Catalyst
Jiaa, L. Liu, S. Gong & H. Yin
a Shandong Provincial Key Laboratory of Chemical Energy-Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering , Liaocheng University , Liaocheng , Shandong , China
Abstract
Researchers fabricated silica-supported ammonium molybdophosphate catalysts with various loadings using a sol-gel method, and characterized them with X-ray diffraction, infrared spectrometry, and scanning electron microscopy.
They also evaluated the catalytic activity of these catalysts in oxidative desulfurization of dibenzothiophene with H2O2 as the oxidant. Results suggest that ammonium molybdophosphate still retained the Keggin structure after supported on silica, and dibenzothiophenes were oxidized effectively with H2O2 in the presence of these catalysts in the n-hexane/AcOH biphasic system to give corresponding sulfone as the product.
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