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Dharaskar, S.A.,Wasewar, K.L.,Varma, M.N.,Shende, D.Z.,Tadi, K.K.,Yoo, C.K. Elsevier Scientific Pub. Co 2014 Fuel processing technology Vol.123 No.-
In present paper experimental data on extractive desulfurization of liquid fuel using trihexyl tetradecyl phosphonium bis (2,4,4-trimethyl pentyl) phosphinate has been presented. The FTIR, <SUP>1</SUP>H NMR, <SUP>13</SUP>C NMR, <SUP>31</SUP>P NMR, and ESR have been discussed for the molecular confirmation of synthesized phosphonium based ionic liquid. Further, conductivity, solubility, and viscosity analyses of phosphonium ionic liquids were carried out. The effects of reaction time, reaction temperature, sulfur compounds, ultrasonication, and recycling of ionic liquid without regeneration on removal of dibenzothiophene from liquid fuel were also investigated. In extractive desulfurization process, the removal of dibenzothiophene in n-dodecane was 79.5% for mass ratio of 1:1 in 30min at 30<SUP>o</SUP>C under the mild reaction conditions. Phosphonium ionic liquids could be reused five times without a significant decrease in activity. Also, the desulfurization of real fuels, multistage extraction was examined. The data and results provided in present paper explore the significant insights of phosphonium based ionic liquids as novel extractant for extractive desulfurization of liquid fuels.
Extractive Desulfurization of Liquid Fuels by Energy Efficient Green Thiazolium based Ionic Liquids
Dharaskar, Swapnil A.,Wasewar, Kailas L.,Varma, Mahesh N.,Shende, Diwakar Z.,Yoo, Chang Kyoo American Chemical Society 2014 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH - Vol.53 No.51
<P>In the present paper, experimental data on extractive desulfurization of liquid fuel using 3-butyl-4-methylthiazolium thiocyanate [BMTH]SCN is presented. The Fourier transform infrared (FTIR), <SUP>1</SUP>H NMR, and <SUP>13</SUP>C NMR analyses have been discussed for the molecular confirmation of synthesized [BMTH]SCN. Further, conductivity, solubility, and viscosity analyses of [BMTH]SCN were performed. The effects of reaction time, reaction temperature, sulfur compounds, ultrasonication, and recycling of [BMTH]SCN without regeneration on removal of dibenzothiophene from liquid fuel were also investigated. In the extractive desulfurization process, the removal of dibenzothiophene in octane was 81.2% for mass ratio of 1:1 in 30 min at 30 °C under the mild reaction conditions. Thiazolium ionic liquids could be reused five times without a significant decrease in activity. Also, the desulfurization of real fuels, multistage extraction was examined. The data and results provided in present paper explore the significant insights of thiazolium based ionic liquids as novel extractant for extractive desulfurization of liquid fuels.</P>
Dharaskar, S.A.,Wasewar, K.L.,Varma, M.N.,Shende, D.Z.,Yoo, C. Elsevier ; King Saud University 2016 Arabian journal of chemistry Vol.9 No.4
<P>In the present paper the experimental data of extractive desulfurization of liquid fuel using 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM]BF4 have been presented. The data of FTIR, 1 H NMR and C-13 NMR have been discussed for the molecular confirmation of synthesized [BMIM]BF4. Further, the thermal properties, conductivity, solubility, and viscosity analysis of the [BMIM]BF4 were carried out. The effects of reaction time, reaction temperature, sulfur compounds, and recycling of ionic liquid without regeneration on dibenzothiophene removal of liquid fuel were presented. In extractive desulfurization process, the removal of dibenzothiophene in n-dodecane was 73.02% for mass ratio of 1: 1 in 30 min at 30 degrees C under the mild reaction conditions. The ionic liquids could be reused four times without a significant decrease in activity. Also, the desulfurizations of real fuels, multistage extraction were presented. The data and results provided in the present paper explore the significant insights of imidazoled ILs for extractive desulfurization of liquid fuels. (C) 2013 Production and hosting by Elsevier B.V. on behalf of King Saud University.</P>