Affiliation:
1. Department of Chemistry, University of Calicut, Kerala, India
Abstract
The isothermal decomposition and kinetics of potassium metaperiodate (KIO4)
were studied by thermogravimetry as a function of the concentration of
dopants. The thermal decomposition of KIO4 proceeds mainly through two
stages: an acceleration period up to ? = 0.50 and a decay stage. The thermal
decomposition data for both doped and untreated KIO4 were found to be best
described by the Prout-Tompkins Equation. The ? - t data of doped and
untreated samples of KIO4 were subjected to isoconversional studies for the
determination of the activation energy values. The isoconversional studies of
the isothermal decomposition of untreated and doped samples of KIO4 indicated
that the thermal decomposition of KIO4 proceeds through a single kinetic
model, the Prout-Tompkins model, throughout the entire range of conversion,
as opposed to earlier observations.
Publisher
National Library of Serbia