A kinetic study of Co oxidation over the perovskite-like oxide LaSrNio4
| العنوان: | A kinetic study of Co oxidation over the perovskite-like oxide LaSrNio4 |
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| المؤلفون: | Ping Zhong, Kejun Wang |
| المصدر: | Journal of the Serbian Chemical Society, Vol 75, Iss 2, Pp 249-258 (2010) |
| بيانات النشر: | National Library of Serbia, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Order of reaction, Chemistry, Inorganic chemistry, Oxide, mechanism, LaSrNiO4, General Chemistry, Activation energy, CO oxidation, Redox, Catalysis, lcsh:Chemistry, Reaction rate, chemistry.chemical_compound, Reaction rate constant, lcsh:QD1-999, kinetics, perovskite-like oxide, Space velocity |
| الوصف: | The effect of reactant/product concentrations, reaction temperature and contact time on CO oxidation was investigated, using the perovskite-like oxide LaSrNiO4 as the catalyst. It was found that the reaction order of CO (reactant), as well as that of CO2 (product), is negative, the reaction orders for CO and CO2 being -0.32 and -0.51, respectively. However, the reaction order for O2 is positive, having a value of 0.62. The negative reaction order of CO and CO2 might be due to their competitive adsorption with O2, preventing the proceeding of oxygen dissociation (the rate-determining step of the reaction). The activation energy (Ea) of the reaction was calculated to be 49.3 kJ mol-1; this small activation energy suggests that LaSrNiO4 is a potential candidate for the CO oxidation reaction. The optimum weight hourly space velocity (WHSV) of the reaction was found to be 0.6 g s cm-3. The reaction conditions in the present case were (0.5-1 % CO + 0.5-2 % O2 + 0-2 % CO2), with He as the balance gas. |
| تدمد: | 1820-7421 0352-5139 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65ab5cbdb4e44b87fc779658e439369e https://doi.org/10.2298/jsc1002249w |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....65ab5cbdb4e44b87fc779658e439369e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18207421 03525139 |
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