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Title of Journal: J Therm Anal Calorim

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Abbravation: Journal of Thermal Analysis and Calorimetry

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Springer Netherlands

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DOI

10.1007/s11747-014-0385-6

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1572-8943

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Thermal deamination kinetics of trisethylenediami

Authors: K S Rejitha S Mathew
Publish Date: 2008/07/01
Volume: 93, Issue: 1, Pages: 213-217
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Abstract

Thermogravimetric techniques have been used to study the kinetics of thermal deamination of trisethylenediaminenickelII sulphate The complex was synthesized and characterized by various chemical and spectral techniques Thermal decomposition studies were carried at different heating rates 5 10 15 and 20°C min−1 in dynamic air The complex undergoes a fourstage decomposition pattern The stages are not well resolved Decomposition path can be interpreted as a twostage deamination and a twostage decomposition Reaction products at each stage were separated and identified by means of IR and XRD The morphology of the complex and the residue were studied by means of SEM Final residue of the decomposition was found to be crystalline NiOThe deamination kinetics was studied using modelfree isoconversional methods viz Friedman FlynnWallOzawa FWO and KissingerAkahiraSunose KAS methods It is observed that the activation energy varies with the extent of conversion indicating the complex nature of the deamination reaction

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