The removal of sulfur compounds(thiophene) from petroleum via extraction with ionic liquids was systematically studied.The ionic liquid[BMIM][PF_6]([BMIM]^+—1-butyl-3-methylimidazolium hexatiuorophosphate cation) was...The removal of sulfur compounds(thiophene) from petroleum via extraction with ionic liquids was systematically studied.The ionic liquid[BMIM][PF_6]([BMIM]^+—1-butyl-3-methylimidazolium hexatiuorophosphate cation) was used to investigate its effect on thiophene removal.The test results showed that a higher temperature and a greater mass ratio of the ionic liquids versus the oil containing the sulfur compounds both helped to remove the thiophene from the feed oil.At a temperature of 60℃and an ionic liquid/feed oil mass ratio of 20%,the desulfurization rate could reach 52.39%, with the extraction time specified at 40 minutes.展开更多
Photoinduced chemical reactions of 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF_6]) were studied by laser photolysis at a wavelength of 266 nm.Excited triplet state ~3[bmim]^+ was observed,radical cation...Photoinduced chemical reactions of 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF_6]) were studied by laser photolysis at a wavelength of 266 nm.Excited triplet state ~3[bmim]^+ was observed,radical cation [bmim]^(2+) and neutral [bmim] radical via photoionization were also formed.Energy transfer from ~3[bmim]^+ toβ-carotene was confirmed.Oxidation via one electron transfer from TMPD to ~3[bmim]^+ was also observed and the rate constant was determined to be 1.2×10.5 L.mol^(-1).s^(-1).The reaction of [bmim][PF_6] with hydrated electron (e_(aq)) was confirmed by laser photolysis in aqueous solution.展开更多
文摘The removal of sulfur compounds(thiophene) from petroleum via extraction with ionic liquids was systematically studied.The ionic liquid[BMIM][PF_6]([BMIM]^+—1-butyl-3-methylimidazolium hexatiuorophosphate cation) was used to investigate its effect on thiophene removal.The test results showed that a higher temperature and a greater mass ratio of the ionic liquids versus the oil containing the sulfur compounds both helped to remove the thiophene from the feed oil.At a temperature of 60℃and an ionic liquid/feed oil mass ratio of 20%,the desulfurization rate could reach 52.39%, with the extraction time specified at 40 minutes.
基金Supported by National Natural Science Foundation of China(20573130,20673137)
文摘Photoinduced chemical reactions of 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF_6]) were studied by laser photolysis at a wavelength of 266 nm.Excited triplet state ~3[bmim]^+ was observed,radical cation [bmim]^(2+) and neutral [bmim] radical via photoionization were also formed.Energy transfer from ~3[bmim]^+ toβ-carotene was confirmed.Oxidation via one electron transfer from TMPD to ~3[bmim]^+ was also observed and the rate constant was determined to be 1.2×10.5 L.mol^(-1).s^(-1).The reaction of [bmim][PF_6] with hydrated electron (e_(aq)) was confirmed by laser photolysis in aqueous solution.
