Desulfurization of Fuel Oils by Extraction with Ionic Liquids

Xiao Jiao Yu; Hai Ling Hao; Jian Zhang; Gang Zheng; Bing Hua Yao

doi:10.4028/www.scientific.net/AMR.396-398.2221

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Synthesis of a New Photochromic Diarylethene Based on Isoxazol and Thiophene Ring for Optical Storage
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Desulfurization of Fuel Oils by Extraction with Ionic Liquids
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Desulfurization of Fuel Oils by Extraction with Ionic Liquids

Abstract:

Four N-alkyl-pyridinium-based ionic liquids, N-ethyl-pyridinium hexafluorophosphate, N-butyl-pyridinium hexafluorophosphate,4-methyl-1-ethyl-pyridinium hexafluorophosphate，and 4-methyl-1- butyl -pyridinium hexafluorophosphate were synthetized by microwave method . The simulated gasoline was prepared by mixing n-hexane, n-heptane,toluene and thiophene. Effect of extraction temperature, the ratio of solvents and diverse ionic liquids are investigated with extraction equilibrium experiment. The best conditions of transport desulfurization are discussed. The result showed that the partition ratio of [MBPy]PF₆ to the thiophene could exceed 1.3 at temperature 45°C , the ionic liquid composition in rafﬁnates was undetectable, [MBPy]PF6 has the best effect on the selective removal of sulfur-cont_{Subscript text}aining compounds from gasoline among these ionic liquids. When temperature is 50°C and desulfurization agent to fuel oil is 1:1, the extraction efficiency can reach over 90% only three-step extraction for gasoline.