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Controlled rate thermal analysis commanded by mass spectrometry for studying the kinetics of thermal decomposition of very stable solids

✍ Scribed by L. A. Pérez-Maqueda; J. M. Criado; F. J. Gotor

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
161 KB
Volume
34
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

A quadrupole mass spectrometer coupled to a thermobalance has been used to develop a controlled rate thermal analysis (CRTA) equipment. This instrument maintains constant the partial pressure of the gas generated in a solid–gas reaction during the entire process while recording the weight loss along the process. This system permits to perform the kinetic analysis of the thermal decomposition of very stable compounds with a very low equilibrium pressure in the temperature range at which the reaction takes place. The performance of the equipment was checked by studying the kinetics of the thermal decomposition of BaCO~3~ using for the control the CO~2~ partial pressure. Both the activation energy and the reaction kinetic model has been calculated. © 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 184–192, 2002; DOI 10.1002/kin.10042

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