LIQUID-LIQUID EXTRACTION STUDIES OF METAL IONS WITH DIAZACROWN AND STRUCTURE ANALOGOUS OPEN-CHAIN COMPOUNOS
作者:
Karsten Gloe,
Peter Mühl,
Horst Rüetig,
Jörg Beger,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1988)
卷期:
Volume 6,
issue 3
页码: 417-429
ISSN:0736-6299
年代: 1988
DOI:10.1080/07366298808917946
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
1,10-diaze [8]crown-6, their N,N'-dibutyl- and dioctyl-substituted derivatives and the structure analogous open-chein tetreoxedieza slkanee have been synthesized in order to examine the extraction properties for Na+, K+, Sr2+and Hg2+. It wes found, that the extraction of strontium, potassium and sodium picratee with azacrown compounds ie much higher than that with open-chein oxaaze alkanes. 1,10-diaze [18] erown-6 has a good selectivity for the extraction of Sr2+over K+and Na in alkaline solution. In the case of Sr2+the diffarencea between tha various azacrown compounds are email, whereea in the caee of K+and Na the substituted derivativee are better extractante. Theserssulte correspond qualitativsly with tha order of stebility conetantB in protic solvsnts. The extrectebility of N,N'-dioctyl-l, 10-dieze[18]crown-6 for HgCl2is very high. Contrerv to the order of stability conetants the uneubetituted conpound do not extract mercury under the choeen experimental condition*. The extraction power of open-chain conpounde ie aleo high and strong Influenced by the alkyl eubatltuente at the nitrogen donor stons,
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