Preparation,thermal decomposition and lifetime of europium tris(dibenzoylmethanato)phenanthrolinecomplex doped xerogel |
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Authors: | J.-H. Hong J. Min G.-H. Guo K.-L. Zhang |
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Affiliation: | (1) College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China, 430072 |
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Abstract: | The Eu tris(dibenzoylmethanato)phenanthroline complex doped xerogel has been synthesized by a catalyst-free sol-gel roure. The non-isothermal kinetic analysis is calculated by Friedman isoconversional method and multivariate non-linear regression method. The overall decomposition process below 600°C is fitted by an Fn model (n order reaction), corresponding to the dehydration of the matrix, and a two-step consecutive reaction of Cn model (n order autocatalytic reaction), corresponding to the decomposition of organic complex. Correlation coefficient is 0.99986. The lifetime values of xerogel, defined as the 5% decomposition of europium organic complex, indicate that the xerogel can find application at near room temperature. |
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Keywords: | europium complex doped xerogel lifetime multivariate non-linear regression non-isothermal kinetics thermal decomposition |
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