假二元微乳液临界行为对结晶紫褪色反应动力学的影响  

Kinetic investigation of alkaline fading of crystal violet in pseudo-binary microemulsions near critical region

作　　者：年福伟 陈志云[2] 方建[1] 赵继华[1] 安学勤[1,3] 沈伟国[1,2] 

机构地区：[1]兰州大学化学化工学院,兰州730000 [2]华东理工大学化学工程学院,上海200237 [3]南京师范大学化学与环境科学学院,南京210097

出　　处：《兰州大学学报（自然科学版）》2009年第F06期49-51,共3页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金项目(20603014,20473035)

摘　　要：研究了结晶紫在水/AOT/正癸烷微乳液假二元体系远离临界区和近临界区的碱性褪色反应动力学.发现当温度远低于假二元体系的低临界点时,反应速率常数随温度的变化符合Arrhenius公式;当温度低于临界点0.30～1.80 K范围内,反应速率常数高于Arrhenius公式的推导值,而且越接近临界点,反应速率常数波动的幅度越大.Kinetic investigation of alkaline fading of crystal violet reaction were investigated in water/AOT/ n-decane （LCST, lower critical solution temperature） ω= 40.8 near and far away from the critical point. When the temperature was much lower than TC （low critical point of the solution）, the reaction rate constant obeyed the Arrhenius equation. But when the temperature was less than TC about 0.300-1.800 K, namely near critical region, the reaction rate constant deviated from Arrhenius equation and appeared to speeding up phenomenon.

关 键 词：微乳液 结晶紫 动力学 临界现象 

分 类 号：O643.1[理学—物理化学] O642.42[理学—化学]