化工学报2015，Vol.66Issue(Z1)：260-264,5.DOI:10.11949/j.issn.0438-1157.20150191
疏水性离子液体萃取氯酚类物质
Extraction of chlorophenols with imidazole-based hydrophobic ionic liquids
摘要
Abstract
1-Octyl-3- methyl imidazole hexafluorophosphate ([Omim]PF6) and 1-octyl-3-methyl imidazole tetrafluoroborate ([Omim]BF4) have been synthesized. Using 2-chlorophenol, 4-chlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol as reactants, Ultraviolet spectrum analysis (USA) as test method, ultrasonic oscillation as extraction method, the performance of extraction to different chlorophenols, the impact on extraction ratio by extraction temperature, time, phase ratio(VIL:VCP) and pH have been studied and the performance of reuse has also been discussed in this paper. It is concluded that the ionic liquids achieve the best condition with 15min, 1:3(VIL:VCP) phase ratio, 308 K andpH<5. Under the best condition, the extraction rates of [Omim]BF4 to 2-chlorophenol, 4-chlorophenol, 2,4-dichlorophenol,2,4,6-trichlorophenol are 97.60%,95.20%,99.40% and 87.20%, respectively. For [Omim]PF6, however, the extraction rates are 95.80%,92.20%,98.20% and 85.40%. The mechanism of extraction is also discussed in this essay. It is also showed that the extraction rate is rising with the increase of temperature by ultrasonic oscillation, which is different with magnetic stirring method.关键词
离子液体/萃取/氯酚Key words
ionic liquid/extraction/chlorophenols分类
化学化工引用本文复制引用
毛世越,刘汉兰..疏水性离子液体萃取氯酚类物质[J].化工学报,2015,66(Z1):260-264,5.基金项目
华中农业大学大学生科技创新基金项目(2012299).supported by the Student Science and Technology Innovation Experiment Program of HZAU (2012299). （2012299）
