Authors:
Luciana Guinesi Universidade Estadual Paulista/UNESP Instituto de Química, Departamento de Química Analítica Araraquara Brazil 14801-970 SP 355 Araraquara Brazil 14801-970 SP 355

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C. Ribeiro Universidade Estadual Paulista/UNESP Instituto de Química, Departamento de Química Analítica Araraquara Brazil 14801-970 SP 355 Araraquara Brazil 14801-970 SP 355

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Marisa Crespi Universidade Estadual Paulista/UNESP Instituto de Química, Departamento de Química Analítica Araraquara Brazil 14801-970 SP 355 Araraquara Brazil 14801-970 SP 355

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A. Santos Universidade Estadual Paulista/UNESP Instituto de Química, Departamento de Química Analítica Araraquara Brazil 14801-970 SP 355 Araraquara Brazil 14801-970 SP 355

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Marisa Capela Universidade Estadual Paulista/UNESP Instituto de Química, Departamento de Química Analítica Araraquara Brazil 14801-970 SP 355 Araraquara Brazil 14801-970 SP 355

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Abstract  

This work aims the evaluation of the kinetic triplets corresponding to the two successive steps of thermal decomposition of Ti(IV)–ethylenediaminetetraacetate complex. Applying the isoconversional Wall–Flynn–Ozawa method on the DSC curves, average activation energy: E=172.49.7 and 205.312.8 kJ mol–1, and pre-exponential factor: logA=16.380.84 and 18.961.21 min–1 at 95% confidence interval could be obtained, regarding the partial formation of anhydride and subsequent thermal decomposition of uncoordinated carboxylate groups, respectively. From E and logA values, Dollimore and Mlek methods could be applied suggesting PT (Prout–Tompkins) and R3 (contracting volume) as the kinetic model to the partial formation of anhydride and thermal decomposition of the carboxylate groups, respectively.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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