Synthesis of Surface-Active Heteropolyacid-Based Ionic Liquids and Their Catalytic Performance for Desulfurization of Fuel Oils

Qin Wu; Quan Shi; Jiqing Shang; Min Wang; Hansheng Li; Daxin Shi; Yun Zhao; Qingze Jiao

doi:10.1021/acsomega.0c04398

Synthesis of Surface-Active Heteropolyacid-Based Ionic Liquids and Their Catalytic Performance for Desulfurization of Fuel Oils

ACS Omega. 2020 Nov 25;5(48):31171-31179. doi: 10.1021/acsomega.0c04398. eCollection 2020 Dec 8.

Authors

Qin Wu¹, Quan Shi¹, Jiqing Shang¹, Min Wang¹, Hansheng Li¹, Daxin Shi¹, Yun Zhao¹, Qingze Jiao^{1

2}

Affiliations

¹ Beijing Key Laboratory for Chemical Power Source and Green Catalysis, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 100081 Beijing, China.
² School of Chemical Engineering and Materials Science, Beijing Institute of Technology, 519085 Zhuhai, China.

Abstract

Surface-active heteropolyacid-based ionic liquids with varying alkyl carbon chains were synthesized, which were subsequently analyzed. The desulfurization of fuels was investigated utilizing various surface-active heteropolyacid-based ionic liquids, and acetonitrile was used as the extractant for the coupling of ODS and EDS. The influences of the alkyl group, surface activity, and hydrophobicity of ionic liquids on sulfur removal were studied. The results suggested that the ionic liquids were stable. Among these ionic liquids, [C₄ImBS]₃[PW₁₂O₄₀] exhibited the best catalytic performance. Using [C₄ImBS]₃[PW₁₂O₄₀] as the catalyst, the influences of the catalyst amount, aqueous hydrogen peroxide amount, and reaction temperature on the sulfur removal were explored. Under the optimum conditions, the sulfur removal could achieve 100% efficiency. The recycle experiments also proved that the ionic liquid could be reused.