Liquid-liquid extraction process of amino acids by a new amide-based functionalized ionic liquid
文献类型：期刊论文
| 作者 | Li Huaxi1; Li Zhuo1,2; Yin Jingmei1; Li Changping1; Chi Yansheng3; Liu Qingshan3; Zhang Xiuling1; Urs, Welz-Biermann3 |
| 刊名 | green chemistry
 |
| 出版日期 | 2012 |
| 卷号 | 14期号:6页码:1721-1727 |
| 英文摘要 | the cost of separation and purification of amino acids accounts for more than 80% of their total production expenditure. thus, investigation into new separation technology is of great importance. in this paper, a new hydrophobic amide-based functionalized ionic liquid ([eimch(2)conhbu]ntf2) was designed and synthesized for the extraction of amino acids. from the preliminary experiments we found that the ionic liquid has a special selectivity for tryptophan (trp) when ph = 0.5, and that its partition coefficient (p-il/w) can reach up to 10.02. subsequently, important factors that affect the extraction process by [eimch(2)conhbu]ntf2 were studied systematically. it was found that the extraction equilibrium could be achieved in 30 min. it was found that ph influences the p-il/w greatly; the smaller the ph value, the higher the p-il/w. when ph > pk(2), the p-il/w is close to zero. with the increase of the volume ratio of the ionic liquid, extraction efficiency increases, while the p-il/w decreases. as for the effect of the initial concentration (c-0) of tryptophan, p-il/w decreases with an increase of c-0 when [eimch(2)conhbu]ntf2 is used as the extractant. from the investigation of the effect of temperature if was found that the extraction process of amino acid by functionalized ionic liquids is exothermic. experiments on the recycling and reuse of [eimch(2)conhbu]ntf2 were also performed, and it was found that the extraction efficiency of [eimch(2)conhbu]ntf2 does not change after four cycles. finally, the mechanisms were probed and the results show that the hydrogen bond formed between the acetyl group of the ionic liquid and the nh2 group of tryptophan accounts for the higher extraction efficiency. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | reactive extraction ; desulfurization ; water ; tryptophan ; solvents ; recovery ; future ; media |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000304558500024 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/143015]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Univ, Coll Chem Engn & Environm, Dalian, Peoples R China 2.Dalian Ocean Univ, Sch Sci, Dalian, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Huaxi,Li Zhuo,Yin Jingmei,et al. Liquid-liquid extraction process of amino acids by a new amide-based functionalized ionic liquid[J]. green chemistry,2012,14(6):1721-1727. |
| APA | Li Huaxi.,Li Zhuo.,Yin Jingmei.,Li Changping.,Chi Yansheng.,...&Urs, Welz-Biermann.(2012).Liquid-liquid extraction process of amino acids by a new amide-based functionalized ionic liquid.green chemistry,14(6),1721-1727. |
| MLA | Li Huaxi,et al."Liquid-liquid extraction process of amino acids by a new amide-based functionalized ionic liquid".green chemistry 14.6(2012):1721-1727. |
入库方式： OAI收割
来源：大连化学物理研究所
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