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Reactions and kinetics of Cl(III) decomposition / Tuula Lehtimaa in Industrial & engineering chemistry research, Vol. 47 n°15 (Août 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5284–5290 Titre : Reactions and kinetics of Cl(III) decomposition Type de document : texte imprimé Auteurs : Tuula Lehtimaa, Auteur ; Ville Tarvo, Auteur ; Gérard Mortha, Auteur Année de publication : 2008 Article en page(s) : p. 5284–5290 Note générale : Bibliogr. p. 5289-5290 Langues : Anglais (eng) Mots-clés : Chlorite  acid;  Chlorous  acid;  Self-decomposition Résumé : Several pathways leading to the decomposition of chlorite and chlorous acid have been published. In this study, both experimental and computational approaches have been applied to clarify the authenticity of the different routes. The decomposition of chlorine (III), i.e. chlorous acid and chlorite, was monitored with iodometric titration at changing chloride concentrations, temperature, and existence of iron (III) at pH 1−3. Dimethylsulfoxide (DMSO) was used to prevent hypochlorous acid from reacting with chlorite. Chlorine dioxide was not formed in the absence of metals when hypochlorous acid and chlorine were trapped. The self-decomposition of Cl(III) proceeds only via the acidic form while chlorite is stable. Chloride ions enhanced the chlorous acid decomposition rate especially at low pH. Chlorite decomposes in the presence of Fe3+ ions. General kinetic parameters and their temperature dependencies were determined for chlorous acid self-decomposition. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0714089 [article] Reactions and kinetics of Cl(III) decomposition [texte imprimé] / Tuula Lehtimaa, Auteur ; Ville Tarvo, Auteur ; Gérard Mortha, Auteur . - 2008 . - p. 5284–5290. Bibliogr. p. 5289-5290 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5284–5290 Mots-clés : Chlorite  acid;  Chlorous  acid;  Self-decomposition Résumé : Several pathways leading to the decomposition of chlorite and chlorous acid have been published. In this study, both experimental and computational approaches have been applied to clarify the authenticity of the different routes. The decomposition of chlorine (III), i.e. chlorous acid and chlorite, was monitored with iodometric titration at changing chloride concentrations, temperature, and existence of iron (III) at pH 1−3. Dimethylsulfoxide (DMSO) was used to prevent hypochlorous acid from reacting with chlorite. Chlorine dioxide was not formed in the absence of metals when hypochlorous acid and chlorine were trapped. The self-decomposition of Cl(III) proceeds only via the acidic form while chlorite is stable. Chloride ions enhanced the chlorous acid decomposition rate especially at low pH. Chlorite decomposes in the presence of Fe3+ ions. General kinetic parameters and their temperature dependencies were determined for chlorous acid self-decomposition. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0714089