胶束聚集体对乙二醇与高碘酸盐反应动力学及反应机理的影响

Effect of Micellar Aggregate on the Kinetics and Mechanism of the Reaction between Ethylene Glycol and Periodate.

作者信息

Segun Esan Olaseni

机构信息

Department of Chemical Sciences, Adekunle Ajasin University, PMB 001, Akungba-Akoko, Nigeria.

出版信息

Int Sch Res Notices. 2014 Oct 29;2014:680176. doi: 10.1155/2014/680176. eCollection 2014.

DOI:10.1155/2014/680176

PMID:27433497

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4897126/

Abstract

The oxidation of ethylene glycol by periodate (IO4 (-)) was studied in different micellar aggregates of cetyltrimethylammonium bromide (CTABr) and dodecylamine (DA) by means of UV/Vis spectroscopy. The observed constant K o was obtained by monitoring the disappearing of ethylene glycol with time at a suitable wavelength under pseudofirst condition. Addition of CTABr and DA inhibits the reaction rate while the kinetic behavior was explained on the association of one of the reactants with the micelles leaving the other reactant in the bulk solution (pseudophase model).

摘要

通过紫外可见光谱法研究了在十六烷基三甲基溴化铵（CTABr）和十二烷基胺（DA）的不同胶束聚集体中，高碘酸盐（IO4(-)）对乙二醇的氧化作用。在准一级条件下，通过在合适波长下监测乙二醇随时间的消失来获得观察到的常数Ko。添加CTABr和DA会抑制反应速率，同时根据其中一种反应物与胶束缔合，而另一种反应物留在本体溶液中的情况（假相模型）来解释动力学行为。