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 600C 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.