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18-冠-6 和二苯并-18-冠-6 辅助从水中萃取铯进入室温离子液体及其与铯配合物稳定常数的关系。

18-Crown-6 and dibenzo-18-crown-6 assisted extraction of cesium from water into room temperature ionic liquids and its correlation with stability constants for cesium complexes.

机构信息

State Research Institute of Reagents and High Purity Substances (IREA), Bogorodskii val 3, 107258, Moscow, Russia.

出版信息

Molecules. 2009 Dec 2;14(12):5001-16. doi: 10.3390/molecules14125001.

DOI:10.3390/molecules14125001
PMID:20032873
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6255266/
Abstract

The pH-profiles of the extraction of Cs(+) into four conventional (1-butyl-3-methylimidazolium hexafluorophosphate and bis[trifluoromethyl)sulphonyl]imides of 1-butyl-3-methylimidazolium, 1-hexyl-3-methylimidazolium, and 1-(2-ethylhexyl)-3- methylimidazolium) and two novel (trioctylmethylammonium salicylate and tetrahexylammonium dihexylsulfosuccinate) room temperature ionic liquids have been determined both in the absence and in the presence of crown ether (18-crown-6 or dibenzo-18-crown-6). The pH-profiles of distribution ratio of crown ethers have been established in the same conditions. The relationship of cesium extraction efficiency both with the stability of its complexes with crown ethers and crown ethers' distribution ratio has been clarified.

摘要

已测定 Cs(+)萃取进入四种常规（1-丁基-3-甲基咪唑六氟磷酸盐和双[三氟甲基]磺酰基]咪唑的 1-丁基-3-甲基咪唑、1-己基-3-甲基咪唑和 1-(2-乙基己基)-3-甲基咪唑）和两种新型（三辛基甲基氯化铵水杨酸酯和四己基铵二己基磺基琥珀酸盐）室温离子液体在不存在和存在冠醚（18-冠-6 或二苯并-18-冠-6）的情况下的 pH 分布。在相同条件下建立了冠醚分配比的 pH 分布曲线。阐明了铯萃取效率与它与冠醚形成的配合物的稳定性以及冠醚分配比之间的关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/5269ee300e4e/molecules-14-05001-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/6a0ae18ad074/molecules-14-05001-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/47670bd623b5/molecules-14-05001-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/f728858eb885/molecules-14-05001-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/577cc0b4f5f9/molecules-14-05001-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/5269ee300e4e/molecules-14-05001-g004a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/6a0ae18ad074/molecules-14-05001-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/47670bd623b5/molecules-14-05001-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/f728858eb885/molecules-14-05001-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/577cc0b4f5f9/molecules-14-05001-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ac15/6255266/5269ee300e4e/molecules-14-05001-g004a.jpg

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