环己醇在酸性高锰酸钾溶液中的氧化反应研究

A Research on the Oxidation Reaction of Cyclohexanol in the Acidic Potassium Permanganate

利用光谱法,研究了环己醇在酸性高锰酸钾溶液中的氧化反应动力学,探讨了不同温度、环己醇浓度和酸度对反应的影响,得出了反应的速率常数、反应级数和反应的活化能,并分析了SDS、CTAB和Brij35三种表面活性剂胶束对该反应的促进作用。结果表明:三种表面活性剂胶束对该氧化反应均表现出加速作用,作用大小依次为CTAB>Brij35>SDS。利用傅里叶红外光谱仪和气相色谱仪检测了反应产物为己二酸。

The reaction kinetics of the oxidation of cyclohexanol in the acidic potassium permanganate by spectrophotometry was studied in this paper. The observed first order rate constants were determined at different temperatures. The reaction rate and the activation energy of the reaction were obtained. The effects of SDS,CTAB and Brij35 micelles on the reaction were analyzed. And it has turned out that： The experiment results indicate that all of SDS,Brij35 and CTAB surfactants accelerate the oxidation reaction dramatically. The order of acceleration is CTAB〉Brij35〉SDS. The effect of surfactants on the oxidation reaction is a net ef-fect from electrostatic effect and local concentration effect.