A kinetic and isotopic study of the decomposition of monoperoxyphthalic acid

Abstract

The mechanism of the decomposition of monoperoxyphthalic acid has been investigated. The rate law is analogous to those found for other monosubstituted peroxides (second order in peroxide with a maximum rate at pH equal to pK* of peroxidic proton). The isotope data are consistent with previously observed cases in that the data are explicable in terms of two competing transition states of identical composition but different configuration.

Simulation and comparative study on the oxidation kinetics of atrazine by UV/H2O2, UV/HSO5− and Luo1, Ma2, Jiang3 et al. 2015Water Research3231290View full textAdd to dashboardCite

“…The solution pH was measured using a pH meter (PHSe3C, Shanghai Precision Scientific Instrument Co., Ltd.). The concentrations of H 2 O 2 , HSO À 5 , and S 2 O 2À 8 were measured by the iodometric method (Ovenston and Rees, 1950;Ball et al, 1967;Frigerio, 1963). The concentration of natural organic matters (mgC L À1 ) was measured with a Multi 3100 N/C TOC analyzer (Shimadzu), according to ISO-8245 (ISO-8245-1, 1999), and the UV absorbance and absorption spectra were measured with a UV/Vis spectrophotometry (Hatch-DR5000).…”

Bleaching cellulosic fibers via pre-sorption of N-[4-(triethylammoniomethyl)-benzoyl]-butyrolactam chloride

“…Hence, SPB and TBBC are two precursors to the formation of a strongly oxidizing peracid via perhydrolysis. A competing reaction is hydrolysis of TBBC (Lee et al 2010), and base-catalyzed decomposition of peracid (Everett and Minkoff 1953; Goodman et al 1962;Koubek et al 1963;Ball et al 1967), as shown in Fig. 7.…”

Fast determination of peroxymonosulfate by flow injection chemiluminescence using the Tb(III) ligand in micelle medium

“…The iodometric titration method is based on oxidation of KI by PMS or persulfate to liberate iodine and a subsequent back titration with thiosulfate using a starch indicator . This conventional method is tedious, time consuming, and poorly sensitive.…”

“…The iodometric titration method is based on oxidation of KI by PMS or persulfate to liberate iodine and a subsequent back titration with thiosulfate using a starch indicator. [16,17] This conventional method is tedious, time consuming, and poorly sensitive. Detection of PMS and persulfate using spectrophotometric methods is less time consuming, as these are based on oxidative decolourization of dyes by Fe 2+ or heat-activated persulfate [18,19] and cobalt-activated PMS.…”