Kinetic analysis of dissociation of smithsonite from a set of non-isothermal data obtained at different heating rates

Kinetic analysis of dissociation of smithsonite from a set of non-isothermal data obtained at different heating rates

The isoconversional methods (Friedman and Flynn-Wall-Ozawa) as well as the invariant kinetic parameters method (IKP) were used in order to work the TG data corresponding to the thermal dissociation of smithsonite. As a result we mention a mechanism change at T≈671 K. For T>671 K, which correspond...

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Veröffentlicht in:Journal of thermal analysis and calorimetry 2001, Vol.63 (3), p.777-786
Hauptverfasser: BUDRUGEAC, P, CRIADO, J. M, GOTOR, F. J, POPESCU, C, SEGAL, E
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Exact sciences and technology
Heating
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
Thermal dissociation
Zinc ores
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Zusammenfassung:The isoconversional methods (Friedman and Flynn-Wall-Ozawa) as well as the invariant kinetic parameters method (IKP) were used in order to work the TG data corresponding to the thermal dissociation of smithsonite. As a result we mention a mechanism change at T≈671 K. For T>671 K, which corresponds to heating rates in the range 0.57– 8.06 K min–1, a reaction order model with 1
ISSN:1388-6150
1588-2926
DOI:10.1023/A:1010148306206