Kinetics of cyanuric chloride hydrolysis in aqueous solution / Zhi Yan in Industrial & engineering chemistry research, Vol. 47 n°15 (Août 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5318–5322 Titre : Kinetics of cyanuric chloride hydrolysis in aqueous solution Type de document : texte imprimé Auteurs : Zhi Yan, Auteur ; Wei-Lan Xue, Auteur ; Zuo-Xiang Zeng, Auteur Année de publication : 2008 Article en page(s) : p. 5318–5322 Note générale : Bibliogr. p. 5321-5322 Langues : Anglais (eng) Mots-clés : Cyanuric chloride  Hydrolysis reaction  Aqueous solution Résumé : The hydrolysis of cyanuric chloride is investigated as a function of temperature, pH, and cyanuric chloride concentration in liquid phase. The hydrolysis reaction is carried out in water or acetone/water system in the temperature range of 283.15−303.15 K. The hydrolysis rates of cyanuric chloride are monitored at different temperatures and at various pHs. The experiment data show that the hydrolysis rates are independent of pH value when pH ≤ 6, and increase with the pH value when pH ≥ 7. On the basis of the results, it is supposed that the hydrolysis reaction takes place by the unimolecular nucleophilic substitution (SN1) mechanism when pH ≤ 6 and by the bimolecular nucleophilic substitution (SN2) mechanism when pH ≥ 7. Kinetics models corresponding to the mechanisms are proposed as follow: −d(nA/v)/dt = 7.625 × 109e−69298/RTcA for the acidic situation and −d(nA/v)/dt = 7.112 × 1011e−59267/RTcAcB0.5 for the alkaline situation. Experiment data show that the models work well with the average deviations of 2.01% and 9.88%, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071289x [article] Kinetics of cyanuric chloride hydrolysis in aqueous solution [texte imprimé] / Zhi Yan, Auteur ; Wei-Lan Xue, Auteur ; Zuo-Xiang Zeng, Auteur . - 2008 . - p. 5318–5322. Bibliogr. p. 5321-5322 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°15 (Août 2008) . - p. 5318–5322 Mots-clés : Cyanuric chloride  Hydrolysis reaction  Aqueous solution Résumé : The hydrolysis of cyanuric chloride is investigated as a function of temperature, pH, and cyanuric chloride concentration in liquid phase. The hydrolysis reaction is carried out in water or acetone/water system in the temperature range of 283.15−303.15 K. The hydrolysis rates of cyanuric chloride are monitored at different temperatures and at various pHs. The experiment data show that the hydrolysis rates are independent of pH value when pH ≤ 6, and increase with the pH value when pH ≥ 7. On the basis of the results, it is supposed that the hydrolysis reaction takes place by the unimolecular nucleophilic substitution (SN1) mechanism when pH ≤ 6 and by the bimolecular nucleophilic substitution (SN2) mechanism when pH ≥ 7. Kinetics models corresponding to the mechanisms are proposed as follow: −d(nA/v)/dt = 7.625 × 109e−69298/RTcA for the acidic situation and −d(nA/v)/dt = 7.112 × 1011e−59267/RTcAcB0.5 for the alkaline situation. Experiment data show that the models work well with the average deviations of 2.01% and 9.88%, respectively. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071289x

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