Kinetics of two redox reactions in 2-butoxyethanol and water near its critical point of solution |
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| Authors: | Zhongyu Du Siyu Duan Mingfang Ma Xiangyu Xu Zhenquan Li Lingdong Kong Jun Liu |
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| Institution: | 1. Laboratory of New Antitumor Drug Molecular Design & Synthesis, College of Basic Medicine, Jining Medical University, Jining, China;2. School of Public Health, Jining Medical University, Jining, China;3. Bio-Nano & Medical Engineering Institute, Jining Medical University, Jining, China |
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| Abstract: | The rate constants of two redox reactions  and  in the critical solution of 2-butoxyethanol and water have been measured by using the UV spectrophotometry at the initial reaction stage. It was found that the rate constants at various temperatures for two reactions were well described by the Arrhenius equation in the noncritical region. The critical slowing down effect was detected in the critical region. The critical slowing down exponents were determined to be 0.044 ± 0.004 and 0.046 ± 0.005 for reactions  and  , respectively. The values of the critical slowing down exponents showed that only dynamic critical slowing down effect, and no thermodynamic singularity could be observed for the two reactions. |
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| Keywords: | critical slowing down critical exponent reaction kinetics |
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