N-butyl-pyridinium tetrafluoroborate as a highly efficient ionic liquid for removal of dibenzothiophene from organic solutions
N-butyl-pyridinium tetrafluoroborate as a highly efficient ionic liquid for removal of dibenzothiophene from organic solutions
-
摘要: In this research, 1-butyl-pyridinium tetrafluoroborate ([C4Py][BF4]-) was prepared by ion exchange method and was characterized by 1H-NMR, 13C-NMR, and FT-IR techniques. The synthesized ionic liquid was used for removal of dibenzothiophene as a typical organosulfur pollutant from organic medium. The effect of different parameters on the extraction efficiency was studied and optimized. At the optimized conditions, 97.68% of dibenzothiophene was extracted from 1 000 mg/L n-hexane solution. The extraction efficiency obtained in this work was higher than the previous reported values. The desulfurization reaction was kinetically followed the second order mechanism. The ionic liquid was reusable and after four regeneration cycles 97% of its original extraction efficiency was retained.
-
关键词:
- extraction /
- desulfurization /
- ionic liquids /
- dibenzothiophene
Abstract: In this research, 1-butyl-pyridinium tetrafluoroborate ([C4Py][BF4]-) was prepared by ion exchange method and was characterized by 1H-NMR, 13C-NMR, and FT-IR techniques. The synthesized ionic liquid was used for removal of dibenzothiophene as a typical organosulfur pollutant from organic medium. The effect of different parameters on the extraction efficiency was studied and optimized. At the optimized conditions, 97.68% of dibenzothiophene was extracted from 1 000 mg/L n-hexane solution. The extraction efficiency obtained in this work was higher than the previous reported values. The desulfurization reaction was kinetically followed the second order mechanism. The ionic liquid was reusable and after four regeneration cycles 97% of its original extraction efficiency was retained.-
Key words:
- extraction /
- desulfurization /
- ionic liquids /
- dibenzothiophene
-
ZHAI L, ZHONG C, HE J L. Hydroxyl ammonium ionic liquids synthesized by water-bath microwave: Synthesis and desulfurization[J]. J Hazard Mater, 2010, 177(1/ 3): 807-813. WILFARD C, KIAT C, MAN Z, BUSTAM M, IBRAHIM M, MUTALIB M, PHAK Z. Extraction of dibenzothiophene from dodecane using ionic liquids[J]. Fuel Process Technol, 2012, 93(1): 85-89. NIE Y, LI C, MENG H, WANG Z N. N-dialkylimidazolium dialkylphosphate ionic liquids: Their extractive performance for thiophene series compounds from fuel oils versus the length of alkyl group[J]. Fuel Process Technol, 2008, 89(10): 978-983. JIANG X, NIE Y, LI C, WANG Z. Imidazolium-based alkylphosphate ionic liquids-A potential solvent for extractive desulfurization of fuel[J]. Fuel, 2008, 87(1): 79-84. LIU S Z, WANG B H, CUI B C, SUN L L. Deep desulfurization of diesel oil oxidized by Fe (VI) systems[J]. Fuel, 2008, 87(3): 422-428. JIANG Z X, L譈H Y, ZHANG Y N, LI C. Oxidative desulfurization of fuel oils[J]. Chin J Catal, 2011, 32(5): 707-715. ZHANG C, PAN X, WANG F, LIU X. Extraction-oxidation desulfurization bypyridinium-based task-specific ionic liquids[J]. Fuel, 2012, 102: 580-584. ZHANG C, WANG F, PAN X Y, LIU X Q. Study of extraction-oxidation desulfurization of model oilby acidic ionic liquid[J]. J Fuel Chem Technol, 2011, 39(9): 689-693. ARCE A, FRANCISCO M, SOTO A. Evaluation of the polysubstituted pyridinium ionic liquid [hmmpy][Ntf2 ] as a suitable solvent for desulfurization: Phase equilibria[J]. J Chem Thermodyn, 2010, 42(6): 712-718. MEI H, MEI B W, YEN F T. A new method for obtaining ultra-low sulfur diesel fuel via ultrasound assisted oxidative desulfurization[J].Fuel, 2003, 82(4): 405-414. LUE B M, GUO Z, XU X B. High-performance liquid chromatography analysis methods developed for quantifying enzymatic esterification of flavonoids in ionic liquids[J]. J Chromatogr, 2008, 1198-1199: 107-114. ROTH M. Partitioning behaviour of organic compounds between ionic liquids and supercritical fluids[J]. J Chromatogr A, 2009, 1216(10):1861-1880. VISSER A E, ROGERS R D. Room-temperature ionic liquids: New solvents for F-element separations and associated solution chemistry[J].J Solid State Chem, 2003, 171(1/ 2): 109-113. LI F T, KOU C G, SUN Z M, HAO Y J, LIU R H, ZHAO D S. Deep extractive and oxidative desulfurization of dibenzothiophene with C5 H9 NO·SnCl2 coordinated ionic liquid[J]. J Hazar Mater, 2012, 205: 164-170. FRANCISCO M, ARCE A, SOTO A. Ionic liquids on desulfurization of fuel oils[J]. Fluid Phase Equilib, 2010, 294(1/ 2): 39-48. MEINDERSMA G W, PODT A, DE HAAN A B. Selection of ionic liquids for the extraction of aromatic hydrocarbons from aromatic /aliphatic mixtures[J]. Fuel Process Technol, 2005, 87(1): 59-70. CALVAR N, DOMINGUEZ I, GÓMEZ E, DOMINGUEZ Á. DomÍnguez, separation of binary mixtures aromatic + aliphatic using ionic liquids: Influence of the structure of the ionic liquid, aromatic and aliphatic[J]. Chem Eng J, 2011, 175: 213-221. CHU X M, HU Y F, LI J G, LIANG Q Q, LIU Y S, ZHAGN X M, PENG X M, YUE W J. Desulfurization of diesel fuel by extraction with [BF4 ]- based ionic liquids[J]. Chin J Chem Eng, 2008, 16(6): 881-884. KHUPSE N D, KUMAR A. Ionic liquids: New materials with wide applications[J]. Indian J Chem Sect A, 2010, 49(5/ 6): 635-648. WANG J L, ZHAO D S, ZHOU E P, DONG Z. Desulfurization of gasoline by extraction with N-alkyl-pyridinium-based ionic liquids[J]. J Fuel Chem Technol, 2007, 35(3): 293-296. FANG D, CHENG J, GONG K, SHI Q R, ZHOU X L, LIU Z L. Green and novel procedure for the preparation of ionic liquid[J]. J Fluorine Chem, 2008, 129(2): 108-111. GALE R J, GILBERT B, OSTERYOUNG R A. Raman spectra of molten aluminum chloride: 1-butylpyridinium chloride systems at ambient temperatures[J]. Inorg Chem, 1978, 17(10): 2728-2729.
点击查看大图
计量
- 文章访问数: 435
- HTML全文浏览量: 18
- PDF下载量: 474
- 被引次数: 0