摘要
研究了Ｇａ^（３＋）协萃体系（Ｇａ^（３＋）－Ｄ_２ＥＨＰＡ－Ｈ_２ＭＰＡ－正十二烷－Ｈ_２ＳＯ_４）的界面吸附和胶团形成热力学，发现该萃取体系中［Ｈ_２ＭＰＡ］影响Ｄ_２ＥＨＰＡ和Ｈ_２ＭＰＡ的界面吸附性质。在中、高［Ｈ_２ＭＰＡ］范围内Ｄ_２ＥＨＰＡ与Ｈ_２ＭＰＡ的界面吸附行为相反，Ｄ_２ＥＨＰＡ的存在也影响Ｈ_２ＭＰＡ的界面吸附行为。研究了界面张力与各因素关系的数学模型，并获得某些胶团形成和界面吸附特性的物化参数。
The thermodynamics of micella formation and interfacial adsorption for a new synergistic extraction system Ga￣(3+)-D_2EHPA-H_2MPA were studied,where H_2MPA is a monoalkyl phosphate extractant with a long carbon chain.It was found that the concentration of HzMPA in the mixed extraction system exhibits the effect on the interfacial adsorption properties of D_2EHPA and H2_MPA,the interfacial adsorption behaviour of D_2EHPA is opposite to that of H_2MPA at the middling and high[H_2MPA].At the same time D_2EHPA also exhibits the effect on the thermodynamics of interfacial adsorption and micella formation of H_2MPA.Mathematical model for different factors depending on the interfacial tension was obtained.Some thermodynamic parameters of micella formation and interfacial adsorption properties were obtained.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第7期1068-1070,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
镓
萃取
界面特性
胶团化作用
Gallium,Mixed extraction system,Interfacial characteristics,Micellization
