Two novel V-shaped symmetric chromophores： E-2,8-bis（4-vinyl-4-carbazol-9-yl）diben- zothiophene （abbreviated as SK-G1） and E-2,8-bis（4-vinyl-4-triphenylamino） dibenzothiophene （abbreviated as ST-G1） have been...Two novel V-shaped symmetric chromophores： E-2,8-bis（4-vinyl-4-carbazol-9-yl）diben- zothiophene （abbreviated as SK-G1） and E-2,8-bis（4-vinyl-4-triphenylamino） dibenzothiophene （abbreviated as ST-G1） have been synthesized and characterized. Their two photon absorption properties were measured by the open-aperture femtosecond Z-scan technique and the nanosecond nonlinear optical transmission （NLT）, respectively, when pumped by Ti： sapphire laser at 750 nm and 800 nm.展开更多
Several metal-based ionic liquids（ILs） were synthesized and used as extractants for the desulfurization of dibenzothiophene（DBT） in simulated fuel oil.The effects of several anion and metal ions,n（ILs）/n（metal...Several metal-based ionic liquids（ILs） were synthesized and used as extractants for the desulfurization of dibenzothiophene（DBT） in simulated fuel oil.The effects of several anion and metal ions,n（ILs）/n（metal） as mole ratio,V（IL）/V（oil） and extractive times on the removal ratio of DBT were investigated in detail.The results showed that[BMIM]HSO4/FeCl3（BMIM was short for l-butyl-3-methyl imidazole）was superior to the other ILs for the extractive desulfurization.A total of 100%of DBT was removed at room temperature in 5 min with V[BMIM]HSO4/Fecl3/Voil = 1：1.The extractive activity of[BMIM]HSO4/FeCl3 IL did not change almost after five runs.Extractive desulfurization of different sulfur compounds and commercial diesel fuel oil were also examined.The removal ratios of the sulfur compounds as the reaction substrates were all over 90%and the sulfur content of commercial diesel oil decreased to120 ppm from 12,400 ppm.展开更多
基金the National Natural Science Foundation of China(No.50273024)the Foundation for the Author of National Excellent Doctoral Dissertation of PR China(FANEDD,No 200333)+1 种基金Natural Foundation of Jiangsu Province(No.BK2003031)the Foundation of Jiangsu Province Education Committee(No.03KJB 150115)for financial support.
文摘Two novel V-shaped symmetric chromophores： E-2,8-bis（4-vinyl-4-carbazol-9-yl）diben- zothiophene （abbreviated as SK-G1） and E-2,8-bis（4-vinyl-4-triphenylamino） dibenzothiophene （abbreviated as ST-G1） have been synthesized and characterized. Their two photon absorption properties were measured by the open-aperture femtosecond Z-scan technique and the nanosecond nonlinear optical transmission （NLT）, respectively, when pumped by Ti： sapphire laser at 750 nm and 800 nm.
基金financially supported by the National Natural Science Foundation of China(No.21106032)Hebei University of Science and Technology doctor funding(No.000172)
文摘Several metal-based ionic liquids（ILs） were synthesized and used as extractants for the desulfurization of dibenzothiophene（DBT） in simulated fuel oil.The effects of several anion and metal ions,n（ILs）/n（metal） as mole ratio,V（IL）/V（oil） and extractive times on the removal ratio of DBT were investigated in detail.The results showed that[BMIM]HSO4/FeCl3（BMIM was short for l-butyl-3-methyl imidazole）was superior to the other ILs for the extractive desulfurization.A total of 100%of DBT was removed at room temperature in 5 min with V[BMIM]HSO4/Fecl3/Voil = 1：1.The extractive activity of[BMIM]HSO4/FeCl3 IL did not change almost after five runs.Extractive desulfurization of different sulfur compounds and commercial diesel fuel oil were also examined.The removal ratios of the sulfur compounds as the reaction substrates were all over 90%and the sulfur content of commercial diesel oil decreased to120 ppm from 12,400 ppm.
