引用本文:
廖伍平, 贾琼, 李德谦, 赵常. Cyanex 923-H2SO4体系萃取第3相的形成和应用[J]. 应用化学,
2003, 20(5): 429-432.
Citation: LIAO Wu-Ping, JIA Qiong, LI De-Qian, ZHAO Chang. Formation and Application of the Third Phase in Cyanex 923-H2SO4 System[J]. Chinese Journal of Applied Chemistry, 2003, 20(5): 429-432.
Citation: LIAO Wu-Ping, JIA Qiong, LI De-Qian, ZHAO Chang. Formation and Application of the Third Phase in Cyanex 923-H2SO4 System[J]. Chinese Journal of Applied Chemistry, 2003, 20(5): 429-432.
Cyanex 923-H2SO4体系萃取第3相的形成和应用
摘要:
考察了Cyanex 923-H2SO4体系中稀释剂、萃取剂浓度、温度等对形成萃取第3相的影响以及三相体系中的相行为,发现直链烷烃稀释剂的碳链越长体系越易出现第3相,而稀释剂越易极化,体系越难形成第3相;萃取剂浓度和体系温度升高不利于出现第3相,且萃取剂富集在第3相中;利用形成的三相体系对萃取剂Cyanex 923进行了纯化。
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关键词:
- Cyanex 923
- / 萃取
- / 三相体系
English
Formation and Application of the Third Phase in Cyanex 923-H2SO4 System
Abstract:
Effects of the organic solvents,concentration of the extractant and temperature on the formation of the third phase in Cyanex 923-H2SO4-H2O system have been investigated.For the linear alkane solvents,the more the carbon number of the alkane,the easier the third phase occurs.The greater the polarizability of the solvent,the more difficult the third phase appears,and it does not even appear.High extractant concentration and high temperature are helpless in the formation of the third phase.The formation of three-phase system could be a favourable opportunity for purification of the extractant.
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Key words:
- Cyanex 923
- / extraction
- / phase formation
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