Interfacial adsorption of iron(II)-4,7-diphenyl-1,10-phenanthroline complex in ion-association extraction systems
Interfacial adsorption of iron(II)-4,7-diphenyl-1,10-phenanthroline complex in ion-association extraction systems
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离子缔合萃取系统中铁(II)-4,7-二苯基-1,10-菲咯啉络合物的界面吸附
DOI：
10.1246/bcsj.62.3446
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发表时间：
1989
影响因子：
4
通讯作者：
Y. Shibuya
中科院分区：
文献类型：
--
作者：
H. Watarai;Y. Shibuya
通过高速搅拌方法和界面张力测量研究了铁(II)–4,7-二苯基-1,10-菲咯啉（DPP）络合物在氯仿/盐水溶液体系中的界面吸附性。在搅拌系统中观察到的界面光谱表明界面处的吸附物质是 tris-DPP 络合物。阴离子浓度对吸附性的微小影响表明，tris 络合物在 0.1 M 阴离子浓度下作为离子对被吸附。通过朗缪尔等温线分析搅拌下离子对的界面吸附。根据反离子的不同，吸附率按 ClO4−<CCl3COO−\simeqBr−<Cl−<SO42− 的顺序增加，即这些阴离子的水合能增加的顺序。
The interfacial adsorptivity of an iron(II)–4,7-diphenyl-1,10-phenanthroline (DPP) complex in chloroform/aqueous salt solution systems was investigated by means of a high-speed stirring method and interfacial tension measurements. The interfacial spectra observed in the stirred system suggested that the adsorbed species at the interface is the tris-DPP complex. A minor effect of the anion concentration on the adsorptivity suggested that the tris-complex adsorbed as an ion-pair in a 0.1 M anion concentration. The interfacial adsorption of the ion-pair under stirring was analyzed by the Langmuir isotherm. The adsorptivity increased, depending on the counter ions, in the order ClO4−<CCl3COO−\simeqBr−<Cl−<SO42−, i.e. the order of increasing hydration energies of these anions.