水溶液中Mn(VII)氧化丙烷-1,3-二醇的动力学及机理

D. F. Latona
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引用次数: 2

摘要

在λmax 525 nm处研究了高锰酸钾在水溶液中氧化丙烷-1,3-二醇的反应。随着[KMnO4]和[丙烷-1,3-二醇]用量的增加,反应速率增加。该反应与[KMnO4]和[丙烷-1,3-二醇]均呈一级相关,与溶液的离子强度无关。〖∆H〗^#(kJ mol-1)、〖∆S〗^# (kJK-1mol-1)和〖∆G〗^#(kJ mol-1)分别为24.98、-0.22和90.50。负熵激活表明反应的过渡态是有序的。光谱研究和红外光谱分析表明,该反应的产物为3-羟基丙烷。对所研究的反应提出了合适的反应机理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Kinetics and Mechanism of Propane-1,3-diol Oxidation by Mn(VII) in Aqueous Medium
The oxidation of propane-1,3-diol by potassium permanganate in aqueous solution was investigated at λmax 525 nm. The rate of the reaction was found to increase with increase in [KMnO4] and [Propane-1,3-diol]. The reaction showed first order dependence each in [KMnO4] and [Propane-1,3-diol] and independent in the ionic strength of the solution. The values of 〖∆H〗^#(kJ mol-1), 〖∆S〗^# (kJK-1mol-1) and〖 ∆G〗^#(kJ mol-1) were 24.98, -0.22 and 90.50 respectively. Negative activation of entropy revealed an ordered transition state for the reaction. Spectroscopic studies and FTIR analysis revealed the product of the reaction to be 3-hydroxy-propanone. A suitable reaction mechanism is proposed for the reaction investigated.
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