| 有机胺类稀溶液的络合萃取 |
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| 引用本文： | 苏海佳 徐丽莲. 有机胺类稀溶液的络合萃取[J]. 化工学报, 1997, 48(6): 713-720 |
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| 作者姓名： | 苏海佳 徐丽莲 |
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| 作者单位： | 清华大学化学工程系!北京100084,清华大学化学工程系!北京100084,清华大学化学工程系!北京100084 |
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| 基金项目： | 国家自然科学基金资助项目（No.2929051） |
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| 摘 要： | 以P204(磷酸二(2-乙基己基)酯)为络合剂,加氢煤油为稀释剂,实验研究了不同的有机胺类稀溶液的络合萃取特性,讨论了有机胺类的pK_a值、络合剂的含量和溶液pH值等因素对络合萃取平衡的影响,提出了同时考虑络合萃取作用和物理萃取作用的萃取相平衡分配系数表达式。利用傅立叶红外谱图分析了P204络合萃取有机胺类的机理。
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| 关 键 词： | 络合萃取 有机胺 萃取 稀溶液 分离 |
EXTRACTION OF ORGANIC AMINES FROM DILUTE SOLUTION BASED ON CHEMICAL COMPLEXATION |
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| Su Haijia,Xu Lilian and Dai Youyuan. EXTRACTION OF ORGANIC AMINES FROM DILUTE SOLUTION BASED ON CHEMICAL COMPLEXATION[J]. Journal of Chemical Industry and Engineering(China), 1997, 48(6): 713-720 |
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| Authors: | Su Haijia Xu Lilian Dai Youyuan |
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| Abstract: | The extraction equilibrium characteristics of amine solution systems have been studied. D2EHPA(in kerosene) is selected as a solvent to separate amines from dilute solution. The effects of pKa of amines, complexing agent concentration, and pH of solutions are discussed. An expression of equilibrium distribution that includes chemical complexation and physical dissolution simultaneously has been proposed. With the FT-IR spectroscopy, mechanism on of amines with D2EHPA is investigated. |
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| Keywords: | extraction based on chemical complexation amines D2EHPA |
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