Kinetics of oxidation of ferrous sulfate with molecular oxygen
| العنوان: | Kinetics of oxidation of ferrous sulfate with molecular oxygen |
|---|---|
| المؤلفون: | Mats Rönnholm, Tapio Salmi, I. Turunen, Johan Wärnå, Marjo Luoma |
| المصدر: | Chemical Engineering Science. 54:4223-4232 |
| بيانات النشر: | Elsevier BV, 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | Reaction mechanism, Chemistry, Applied Mathematics, General Chemical Engineering, Kinetics, Inorganic chemistry, chemistry.chemical_element, Sulfuric acid, General Chemistry, Rate equation, Oxygen, Industrial and Manufacturing Engineering, Isothermal process, Ferrous, chemistry.chemical_compound, Bar (unit) |
| الوصف: | The oxidation kinetics of Fe 2+ ions to Fe 3+ in concentrated H 2 SO 4 –FeSO 4 solutions was studied with isothermal and isobaric experiments carried out in a laboratory-scale pressurized autoclave. The experiments were performed at temperatures between 60 and 130°C, and the oxygen pressures between 4 and 10 bar. The kinetic results revealed that the oxidation rate increases with temperature and pressure. A rate equation was derived for the oxidation process, based on the assumption that stepwise complexation of Fe 2+ with dissolved oxygen is rate determining. The rate equation has the form r = a 1 c 2 FeII c O /(1+ a ′= c FeII ), where c FeII and c O are the concentrations of Fe 2+ ions and dissolved oxygen, respectively a 1 and a ′ are experimentally determined kinetic parameters. A comparison of the experimental data with the model fit revealed that the proposed rate equation is applicable for the prediction of the Fe 2+ -oxidation kinetics in acidic solutions. |
| تدمد: | 0009-2509 |
| DOI: | 10.1016/s0009-2509(99)00117-7 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::9c514f1c283e98b94b377ad93f29301c https://doi.org/10.1016/s0009-2509(99)00117-7 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........9c514f1c283e98b94b377ad93f29301c |
| قاعدة البيانات: | OpenAIRE |
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