SDS 和 CTAB 胶束介质中的催化作用：双(2,4,6-三吡啶-s-三嗪)铁(II)碱水解动力学

Q4 Earth and Planetary Sciences

Research Journal of Chemistry and Environment Pub Date : 2023-12-05 DOI:10.25303/281rjce80084

Kumari B Leela, P. Shyamala, K. Nagalakshmi

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引用次数: 0

摘要

在两种不同类型的胶束介质中，研究了[Fe(tptz)2]2+ 在 NaOH 存在下的水解动力学：SDS 阴离子介质和 CTAB 阳离子介质。与水介质相比，两种胶束介质中的反应速度都要快得多（kSDS = 102.2 X10-4 mol-1dm3s-1，kCTAB = 43.92 X 10-4 mol-1dm3s-1，kaq = 0.115 X10-4 mol-1dm3s-1）。在两种介质中，反应物都服从一阶动力学。速率常数与表面活性剂的关系曲线在两种情况下都显示出最大值，这是双分子胶束催化反应的特征。这种动力学行为是通过贝雷津模型来解释的。

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Catalysis in SDS and CTAB micellar media: Kinetics of base hydrolysis of Bis(2,4,6-tripyridyl-s-triazine) iron (II)

Kinetics of the hydrolysis of [Fe(tptz)2]2+ in the presence of NaOH has been studied in two different types of micellar media: SDS anionic and CTAB cationic. The reaction was found to be much faster in both the micellar media compared to aqueous medium (kSDS = 102.2 X10-4 mol-1dm3s-1, kCTAB = 43.92 X 10-4 mol-1dm3s-1, kaq = 0.115 X10-4 mol-1dm3s-1). The reaction obeys first order kinetics with respect to both the reactants in both the media. The rate constant versus surfactant profile shows a maximum in both cases which is characteristic of a bimolecular micelle catalyzed reaction. The kinetic behaviour has been accounted for by using the Berezin model.

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来源期刊

Research Journal of Chemistry and Environment 化学-化学综合

CiteScore

0.50

自引率

0.00%

发文量

195

审稿时长

4-8 weeks

期刊介绍： Information not localized