I am studying the kinetic of formation of triiodide from oxidation of iodide by hydrogen peroxide in acidic solution inside reverse micelle. What is the role and also advantages of hydrogen peroxide as an oxidant inside reverse micelle system?
Dear Elnaz,
Hydrogen peroxide is the oxidant that gives the following reaction with the iodide ion:
3 I- (aq) + H2O2 (aq) + 2 H+ (aq) → I3- (aq) + 2 H2O (l)
In reverse micelles, the aqueous zones are inside the micelles, meaning that for AOT and CTAC, this is the same zones where their charged head groups reside. An acidic pH is required for this reaction as it consumes H+. Since hydrogen peroxide is not charged, it has no electrostatic interaction wiht the surfactant head groups. The kinetics of the reaction are highly depending in the number of micelles, their size (depends on continuous phase) and on their water content. People have used peroxodisulphate (Article Kinetics of the oxidation of iodide by peroxodisulphate in r...
) but here I would expect possible interaction in case of the CTAC micelles as they are oppositely charged.If you want to study the kinetics of the system be sure you keep the micellar size constant as well as the number of micelles.
Kind regards, Leo
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