Petroleum Science >2025,??Issue1:??- DOI: https://doi.org/10.1016/j.petsci.2024.07.012
Exceptional functionalized dual-acidic ionic liquid: High-efficiency catalytic reaction medium for oxidation desulfurization Open?Access
文章信息
作者：Ran Liu, Chang Wang, Qiang Yang, Jing-Ran Yang, Chen Liu, Liberty Mguni, Xin-Ying Liu, Ya-Li Yao, Fa-Tang Li
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引用方式：Ran Liu, Chang Wang, Qiang Yang, Jing-Ran Yang, Chen Liu, Liberty Mguni, Xin-Ying Liu, Ya-Li Yao, Fa-Tang Li, Exceptional functionalized dual-acidic ionic liquid: High-efficiency catalytic reaction medium for oxidation desulfurization, Petroleum Science, Volume 22, Issue 1, 2025, Pages 492-507, https://doi.org/10.1016/j.petsci.2024.07.012.
文章摘要
Abstract: The development of highly active functionalized ionic liquids (ILs) as both extractants and catalysts for use in achieving deep desulfurization continues to pose challenges. In this study, a highly efficient oxidative desulfurization system was constructed, composed of dual-acidic ionic liquids (DILs) and H2O2-AcOH. The investigation results of four DILs prepared from different metal chlorides ([HSO3C3NEt3]Cl-MnCln, MnCln?=?AlCl3, ZnCl2, CuCl2, FeCl3) in oxidative desulfurization showed that [HSO3C3NEt3]Cl–AlCl3 had an outstanding catalytic effect and significantly promoted the oxidation of sulfides. With a 0.2?g [HSO3C3NEt3]Cl–AlCl3, the removal rate of dibenzothiophene (DBT) reached 100% in 10?mL model oil under mild conditions at 55?°C for 20?min. The key is its ability to induce the dismutation of superoxide anions (?O2?), which facilitates the generation of singlet oxygen (1O2). The efficient oxidation of DBT is accomplished through a predominantly 1O2-mediated non-radical mechanism. [HSO3C3NEt3]Cl-AlCl3 serves as a favorable medium for contact to be made between 1O2 and sulfides, which indicates an efficient catalytic-adsorption synergy.
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Keywords: Dual-acidic ionic liquid; Catalysis; Oxidation desulfurization; Reactive oxygen species