Study of ClO2 generation reaction via experimental data of aqueous mixed electrolyte solutions: HClO4-NaCLO3-H2O and HCLO4-NaCl-H2O
| Autor: | D. Couillard, F. T. Tran, D. Rouleau |
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| Rok vydání: | 2007 |
| Předmět: |
Chlorine dioxide
Reaction mechanism Aqueous solution Renewable Energy Sustainability and the Environment General Chemical Engineering Organic Chemistry Inorganic chemistry Mineralogy Electrolyte Pollution Inorganic Chemistry Reaction rate chemistry.chemical_compound Fuel Technology chemistry Qualitative inorganic analysis Ternary operation Waste Management and Disposal Sodium chlorate Biotechnology |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 47:187-207 |
| ISSN: | 1097-4660 0268-2575 |
| DOI: | 10.1002/jctb.280470302 |
| Popis: | A new model for mixtures (two and more solutes) of aqueous electrolyte solutions was found to be as accurate as other models, or more accurate, in prediction of new experimental results of the ternary systems HClO4–NaClO3–H2O and HClO4–NaCl–H2O. The water activity values are then used to study the mechanism of the chloride–chlorate reaction, generating chlorine dioxide: 2H+ + ClO−3 + Cl− ClO2 + 1/2Cl2 + H2O Spectrophotometric measurements of the production rate of ClO2 have confirmed that the intermediary species in the proposed equilibrium H+(mH2O) H+(m-n)H2O + nH2O Is actually H(H20)+m-n. The final kinetic expression for the reaction rate of chlorine dioxide generation, used in pulp bleaching, is then derived to explain the high order with respect to acid concentration. |
| Databáze: | OpenAIRE |
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