Solid-state kinetics and reaction mechanisms for the formation of Y2Cu2O5 |
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| Authors: | N. Akhtar R. Janes M. J. Parker |
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| Affiliation: | (1) Department of Chemistry, Manchester Metropolitan University, John Dalton Building, Chester Street, M1 5GD Manchester, UK |
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| Abstract: | The kinetics of Y2Cu2O5 formation by the solid-state reaction between Y2O3 and CuO were followed by quantitative X-ray powder diffraction, the initial nucleation stages being probed by EPR spectroscopy. Analysis of fractional reaction versus time data showed a best fit to the mathematical model of Jander, with an activation energy of 58.2 kcal mol–1. Preliminary comparative studies, employing different preparative routes; coprecipitation, accelerants and combustion synthesis are also reported. |
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