Construction of amphiphilic and polyoxometalate poly(ionic liquids) for enhanced oxidative desulfurization in fuel

Interfacial properties of catalysts and distribution of active sites affect the catalytic oxidative desulfurization activity, which has become the research focus in recent years. Towards desulfurization in fuel, a kind of amphiphilic and polyoxometalate poly(ionic liquids) was prepared by the cross-linking copolymerization and ion exchange reaction. The resulting samples characterized in detail were employed in the oxidation of refractory aromatic sulfur-containing compounds. With H 2 O 2 as the oxidant, the sample p-C 2 VIM-DVB-2-PMo exhibited enhanced desulfurization performance and good thermal stability, meeting the demand of deep desulfurization. Besides, no significant decrease on sulfur removal was observed after recycling for 8 times. Moreover, density functional theory calculations were employed to investigate the adsorption strength and interaction nature between the cation and typical sulfide.