金属学报  1993, Vol. 29 Issue (5): 56-62

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D_2EHPA-MPA-Fe~(3+)协同萃取体系的动力学和界面化学研究

於静芬;刘涤非

清华大学化工系;教授.北京100084;清华大学

EXTRACTION KINETICS AND INTERFACIAL CHEMISTRY FOR SYNERGISTIC EXTRACTION SYSTEMD_2EHPA-MPA-Fe~(3+)

LIU Difei Department of Chemical Engineering; Tsinghua University; BeijingYU Jingfen;professor;Department of Chemical Engieering.Tsinghua University;Beijing 100084

於静芬;刘涤非. D_2EHPA-MPA-Fe~(3+)协同萃取体系的动力学和界面化学研究[J]. 金属学报, 1993, 29(5): 56-62.
, . EXTRACTION KINETICS AND INTERFACIAL CHEMISTRY FOR SYNERGISTIC EXTRACTION SYSTEMD_2EHPA-MPA-Fe~(3+)[J]. Acta Metall Sin, 1993, 29(5): 56-62.

摘要 参考文献 相关文章 Metrics 全文: PDF(476 KB)   摘要: 本文研究了协同萃取体系(D_2EHPA—MPA—Fe~(3+))的胶团形成热力学、界面特性、协萃效应和界面动力学(动力学控制机制和反应速率方程)研究发现,混合萃取体系中的D_2EHPA强烈地影响MPA的胶团形成热力学和界面吸附行为,得到了胶团生成常数(K_m)、胶团形成自由能(△G_m)和临界胶团浓度(CMC)的热力学参数D_2EHPA和MPA具有相反的界面吸附行为研究发现D_2EHPA—MPA混合萃取剂体系对Fe~(3+)产生了协萃效应动力学和界面化学的研究结果还证实了非胶束混合萃取体系的Fe~(3+)的萃取过程是受化学反应控制的,控制反应发生在界面上 关键词 ： 界面化学,  协萃效应,  Fe~(3+),  萃取动力学     Abstract：The interfacial chemistry, synergistic effects and interfacial kinetics of thesynergistic extraction system D_2EHPA-MPA-Fe~(3+) have been studied, where MPA is amono-alkyl phosphate extraction with long carbon chain. D_2EHPA in the mixed extractionsystem strongly exhibits the effect on the thermodynamics of micella formation and interfaceproperties of MPA. Some thermodynamic parameters of micella formation were obtained.The interfacial adsorption behaviour of D_2EHPA is opposite to that of MPA. Theemulsification for single MPA and the mixed system was discussed. The synergistic effectswere found in this mixed extraction system. It is proved that the process of Fe~(3+) extractionfor non-mixed extraction system is controlled by chemical reaction, the controlling reactionoccurs at the interface, and the reaction rate equation is obtained. Key words： interfacial chemistry    synergistic effect    Fe~(3+)    extraction kinetics 收稿日期: 1993-05-18      基金资助:国家自然科学基金 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 於静芬 刘涤非 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1993/V29/I5/56 1 於静芬,郁强,滕藤.有色金属(冶炼部分),1981;(6) :28 2 滕藤,於静芬,郁强.稀有金属,1983;2(2) :119 3 郁强,於静芬,滕藤.稀有金属,1985;4(1) :29 4 於静芬,刘涤非.铀矿冶,1989;8(2) :18 5 於静芬,熊毅钢.有色金属(季刊),1990;42(2) :67 6 於静芬,吉晨.高等学校化学学报,1992;13:224 7 於静芬,王彦玲,陈志洪,漆明鉴.核燃料,1966;(1) : [1] 刘进才;陆九芳. N530-正庚烷萃取高浓度Cu的动力学[J]. 金属学报, 1990, 26(4): 93-97. Viewed Full text Abstract Cited   Shared      Discussed