Radical chain mechanism for the S₂O₈ ^2--S₂O₃ ^2--Cu(ii) flow system explains high-amplitude pH oscillations in the NH₄OH-modified version.

ABSTRACT: Peroxodisulfate is well known as an important reagent in analytical, environmental and other branches of chemistry, as well as in industrial processes. One of the most studied oxidative reactions peroxodisulfate participates in as an oxidizer is the Cu(ii)-catalyzed peroxodisulfate-thiosulfate reaction. When carried out in a flow reactor, this system shows oscillatory dynamics characterized by periodic changes in the Pt-potential and [O₂] while it only displays variation in the pH with a few tenths of unit magnitude. Our recent experiments unveiled an increase of the amplitude of the pH oscillations that exceeds 4 units when NH₄OH was introduced into the oscillatory flow system. The dynamics of Cu(ii)-catalyzed peroxodisulfate-thiosulfate reaction has been described i

SUBMITTER: Kurin-Csorgei K 

PROVIDER: S-EPMC11258961 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature