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Reaction kinetics and mechanism of copper(II) catalyzed oxidative deamination and decarboxylation of ornithine by peroxomonosulfate / Paramasivam Suresh Kumar in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6310-6319 Titre : Reaction kinetics and mechanism of copper(II) catalyzed oxidative deamination and decarboxylation of ornithine by peroxomonosulfate Type de document : texte imprimé Auteurs : Paramasivam Suresh Kumar, Auteur ; Radhakrishnan Mohan Raj, Auteur ; Srinivasalu Kutti Rani, Auteur Année de publication : 2012 Article en page(s) : pp. 6310-6319 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Oxidation  Catalytic  reaction  Kinetics Résumé : Copper(II) catalyzed and uncatalyzed oxidation of ornithine by peroxomonosulfate (PMS) was studied in acetic acid–sodium acetate buffered medium (pH 3.6–5.2). The catalyzed reaction was 2.6 times faster than the uncatalyzed reaction. The catalytic constant kc obtained in this study was 0.15 mol–1 dm3 s–1. A negative value of entropy of activation obtained in this reaction revealed that the transition state was more rigid than the reactants. ESR spectral data ruled out the participation of free radical intermediate. Cyclic voltammetric and absorption studies confirmed the formation of copper–ornithine–PMS complex. HPLC analysis revealed that the product formed in this reaction was 4-aminobutanal, which was confirmed by NMR spectra. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867282 [article] Reaction kinetics and mechanism of copper(II) catalyzed oxidative deamination and decarboxylation of ornithine by peroxomonosulfate [texte imprimé] / Paramasivam Suresh Kumar, Auteur ; Radhakrishnan Mohan Raj, Auteur ; Srinivasalu Kutti Rani, Auteur . - 2012 . - pp. 6310-6319. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6310-6319 Mots-clés : Oxidation  Catalytic  reaction  Kinetics Résumé : Copper(II) catalyzed and uncatalyzed oxidation of ornithine by peroxomonosulfate (PMS) was studied in acetic acid–sodium acetate buffered medium (pH 3.6–5.2). The catalyzed reaction was 2.6 times faster than the uncatalyzed reaction. The catalytic constant kc obtained in this study was 0.15 mol–1 dm3 s–1. A negative value of entropy of activation obtained in this reaction revealed that the transition state was more rigid than the reactants. ESR spectral data ruled out the participation of free radical intermediate. Cyclic voltammetric and absorption studies confirmed the formation of copper–ornithine–PMS complex. HPLC analysis revealed that the product formed in this reaction was 4-aminobutanal, which was confirmed by NMR spectra. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867282