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Gamma irradiation effects on the kinetics of the non-isothermal decomposition of manganese acetate tetrahydrate
Faculty
Science
Year:
1996
Type of Publication:
Article
Pages:
165-172
Authors:
MOUSTAFA, MM, Diefallah, EHM, Obaid, AY, Qusti, AH, ElBellihi, AA, Wahab, MA
DOI:
10.1016/0040-6031(95)02695-9
Journal:
THERMOCHIMICA ACTA ELSEVIER SCIENCE BV
Volume:
274
Research Area:
Chemistry
ISSN
ISI:A1996UH10100013
Keywords :
decomposition, DTA-TG, gamma irradiation, kinetics, manganese acetate tetrahydrate, non-isothermal
Abstract:
The thermal dehydration and decomposition of Co-60-gamma-irradiated and non-irradiated crystals of manganese acetate tetrahydrate were studied using dynamic thermogravimetric techniques. The effects of radiation on the kinetics of the thermal decomposition reactions were studied up to a total dose of about 700 kCy. A computer program has been used for kinetic evaluation of non-isothermal thermogravimetric data according to a composite integral method, Kinetic analyses of dynamic TG curves were discussed in view of the composite method in comparison with the methods due to Coats and Redfern and to Ozawa. The activation parameters of the decomposition reactions for non-irradiated and gamma-irradiated crystals were calculated and the results of the different methods of data analysis were compared and discussed.
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