Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (6): 980-984. Previous Articles     Next Articles

Original Articles

微乳液体系中过硫酸钾氧化碘离子的动力学研究

安学勤;王涛;沈伟国   

  1. 兰州大学化学系,兰州(730000)
  • 发布日期:2002-06-15

Study on the Persulfate-Iodide Reaction in Microemulsions

An Xueqin;Wang Tao;Shen Weiguo   

  1. Department of Chemistry, Lanzhou University,Lanzhou(730000)
  • Published:2002-06-15

Rate constants have been measured for the oxidation of iodide ions by persulfate both in conventional aqueous solutions with various salt concentration and in the sodium bis(2-ethylhexyl) sulfosuccinate/isooctane/water microemulsions with various molar ratios R of water to surfactant. The activity of water in the aqueous core of the W/O microemulsions has been calculated and shown to be significantly decreasing with the decrease of the size of the microreactor when R≤20. The dependence of the rate constant on activity of water and ionic strength is discussed.

Key words: MICROEMUSION, POTASSIUM PERSULFATE, IODINE OXIDE, REACTION RATE, ACTIVITY

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