全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
化工学报  2015 

疏水性离子液体萃取氯酚类物质

DOI: 10.11949/j.issn.0438-1157.20150191, PP. 260-264

Keywords: 离子液体,萃取,氯酚

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了研究离子液体对环境水体中氯酚类物质的萃取性能,以治理氯酚类污染物。制备了1-辛基-3-甲基咪唑六氟磷酸盐([Omim]PF6)和1-辛基-3-甲基咪唑氟硼酸盐([Omim]BF4)两种疏水性离子液体。以超声波辅助萃取的方法,研究了离子液体对2-氯苯酚(2-CP)、4-氯苯酚(4-CP)、2,4-二氯苯酚(2,4-DCP)和2,4,6-三氯苯酚(2,4,6-TCP)等化合物的萃取性能。考察了温度、时间、相比(VIL:VCP)以及溶液pH等因素对萃取效果的影响,并对离子液体的重复使用性能进行了探讨。结果表明,温度与相比对萃取效果影响显著。两种离子液体对氯酚均显示出良好的萃取性能。在308K,当相比(VIL:VCP)为1:3,溶液pH=3,萃取10min的条件下,[Omim]BF4对2-CP、4-CP、2,4-DCP和2,4,6-TCP的萃取率分别为97.60%、95.20%、99.40%和87.20%;而以[Omim]PF6为溶剂,对氯酚的萃取率依次为95.80%、92.20%、98.20%和85.40%。研究发现,与磁力搅拌萃取方法不同,超声波辅助萃取的方法,随温度升高离子液体对氯酚类物质的萃取率增大。

References

[1]  Lü Tingting(吕廷婷), Ji Jingou(季金苟), Xia Zhining(夏之宁), Jiang Honggui(蒋宏贵). Progress in room temperature ionic liquids for extraction of organic compounds [J]. Chemical Industry and Engineering Progress(化工进展) 2010 (5): 801-806.
[2]  Song Xudong(宋旭东), Li Xiaohua(李肖华), Ji Dengxiang(姬登祥), Sun Nan (孙楠), Ji Jianbing(计建炳). Research on extraction of phenol with imidazole-based hydrophobic ionic liquids [J]. Journal of Zhejiang University of Technology(浙江工业大学学报), 2009, 37(3): 251-254.
[3]  Wan Hui(万辉), Huang Deying(黄德英), Cai Yuan(蔡源), Guan Guofeng(管国锋). Extraction of phenolic compounds with [omim]BF4 ionic liquid [J]. Journal of Chemical Engineering of Chinese Universities (高校化学工程学报), 2008, 22(1): 162-165.
[4]  Li Xian(李闲), Zhang Suojiang(张锁江), Zhang Jianmin(张建敏), Chen Yuhuan(陈玉焕), Zhang Yanqiang(张延强), Sun Ning(孙宁). Extraction of phenols with hydrophobic ionic liquids [J]. The Chinese Journal of Process Engineering(过程工程学报), 2005, 5(2): 148-151.
[5]  Wei G T, Yang Z, Chen C J. Room temperature ionic liquid as a novel medium for liquid/liquid extraction of metal ions [J]. Analytica Chimica Acta, 2003, 488(2): 183-192.
[6]  Shimojo K, Goto M. Solvent extraction and stripping of silver ions in room-temperature ionic liquids containing calixarenes [J]. Analytical Chemistry, 2004, 76(17): 5039-5044.
[7]  Zhang S, Zhang Z C. Novel properties of ionic liquids in selective sulfur removal from fuels at room temperature [J]. Green Chemistry, 2002, 4(4): 376-379.
[8]  Rogers R D, Huddleston J G, Willauer H D. Room temperature ionic liquids as novel media for "clean" liquid- liquid extraction [J]. Chem. Commun., 1998(16): 1765-1766.
[9]  Zhu Haibao(朱海豹), Yao Chaoying(姚超英), Wang Ling(汪玲), et al. Analysis of phenolic compounds in soil using ionic liquid aqueous solution as extractant coupled with ion chromatography [J]. Journal of Zhejiang University:Science Edition (浙江大学学报: 理学版), 2010, 37(2): 196-200.
[10]  Fadeev A G, Meagher M M. Opportunities for ionic liquids in recovery of biofuels [J]. Chemical Communications, 2001(3): 295-296.
[11]  Khachatryan K S, Smirnova S V, Torocheshnikova I I, et al. Solvent extraction and extraction-voltammetric determination of phenols using room temperature ionic liquid [J]. Anal. Bioanal. Chem., 2005, 381(2): 464-470.
[12]  Wilfred C D, Kiat C F, Man Z, et al. Extraction of dibenzothiophene from dodecane using ionic liquids [J]. Fuel Processing Technology, 2012, 93(1): 85-89.
[13]  Li Ting(李婷), Hou Xiaodong(侯晓东), Chen Wenxue(陈文学), Dou Haigang(豆海港), Chou Houyuan(仇厚援). Present research situation and expectation of the ultrasound extraction [J]. Journal of Anhui Agri.Sci. (安徽农业科学), 2006, 34(13): 3188 -3190.
[14]  Zhou Q, Zhang X, Xiao J. Ultrasound-assisted ionic liquid dispersive liquid-phase micro-extraction: a novel approach for the sensitive determination of aromatic amines in water samples [J]. Journal of Chromatography A, 2009, 1216(20): 4361-4365.
[15]  Cao X, Ye X, Lu Y, et al. Ionic liquid-based ultrasonic-assisted extraction of piperine from white pepper [J]. Analytica Chimica Acta, 2009, 640(1): 47-51.
[16]  Xia Yujie(夏禹杰), Zeng Jianli(曾建立), Zhao Bing(赵兵). Extraction of artemisinin from artemisia annual l with 1-ethyl-3- methylimidazolium bromide enhanced by ultrasonic wave [J]. The Chinese Journal of Process Engineering(过程工程学报), 2008, (4): 774-778.
[17]  Fan J P, Cao J, Zhang X H, et al. Optimization of ionic liquid based ultrasonic assisted extraction of puerarin from Radix Puerariae Lobatae by response surface methodology [J]. Food Chemistry, 2012, 135(4): 2299-2306.
[18]  Wang W, Li Q, Liu Y, et al. Ionic liquid-aqueous solution ultrasonic-assisted extraction of three kinds of alkaloids from Phellodendron amurense Rupr and optimize conditions use response surface [J]. Ultrasonics Sonochemistry, 2015, 24: 13-18.
[19]  Holbrey J D, Seddon K R. The phase behaviour of 1-alkyl-3- methylimidazolium tetrafluoroborates; ionic liquids and ionic liquid crystals [J]. Journal of the Chemical Society, Dalton Transactions, 1999 (13): 2133-2140.
[20]  Guo Jingtao(郭晶涛).The calculations of structural properties and the interaction between the anions and cations in ionic liquids[D]. Lanzhou: Northwest Normal University(西北师范大学), 2009.
[21]  Rivera-Rubero S, Baldelli S. Influence of water on the surface of hydrophilic and hydrophobic room-temperature ionic liquids [J]. Journal of the American Chemical Society, 2004, 126(38): 11788-11789.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133