Studies on Interfacial Characteristics and Micellization for A New Extraction System of Gallium

Abstract

Abstract: The thermodynamics of micella formation and interfacial adsorption for a new synergistic extraction system Ga³⁺-D₂EHPA-H₂MPAwere studied, where H₂MPAis a monoalkyl phosphate extractant with a long carbon chain.It was found that the concentration of HzMPAin the mixed extraction system exhibits the effect on the interfacial adsorption properties of D₂EHPAand H₂_MPA, the interfacial adsorption behaviour of D₂EHPAis opposite to that of H₂MPAat the middling and high[H₂MPA].At the same time D₂EHPAalso exhibits the effect on the thermodynamics of interfacial adsorption and micella formation of H₂MPA.Mathematical model for different factors depending on the interfacial tension was obtained.Some thermodynamic parameters of micella formation and interfacial adsorption properties were obtained.

Key words: Gallium, Mixed extraction system, Interfacial characteristics, Micellization

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YU Jing-Fen, LIU Di-Fei. Studies on Interfacial Characteristics and Micellization for A New Extraction System of Gallium[J]. Chem. J. Chinese Universities, 1994, 15(7): 1068.

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Studies on Interfacial Characteristics and Micellization for A New Extraction System of Gallium

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