MICROEMULSIONS AS A MEDIUM IN CHEMICAL-KINETICS - THE PERSULFATE IODIDE REACTION

被引：53

作者：

MOYA, ML ^{[1
]}

IZQUIERDO, C ^{[1
]}

CASADO, J ^{[1
]}

机构：

[1] UNIV SALAMANCA,DEPT QUIM FIS,E-37008 SALAMANCA,SPAIN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 15期

关键词：

D O I：

10.1021/j100168a052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rate constants are reported for the oxidation of iodide ions by persulfate in sodium bis(2-ethylhexyl) sulfosuccinate (aerosol OT or AOT)/decane/water microemulsions. The rate law is in the form v = k2[I-][S2O8(2-)], where both concentrations are referred to the aqueous phase. The reaction rate is higher in microemulsions than when it takes place in a conventional aqueous medium. Results show that when the AOT concentration remains constant, the reaction rate decreases when increasing the molar ratio w = [H2O]/[AOT], appearing to asymptotically approach the rate in bulk water as the amount of water in the microemulsions increases. For a given w value, the reaction rate shows no dependence on the surfactant concentration.

引用

页码：6001 / 6004

页数：4

共 45 条

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[2]

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