Authors:
B. Das Ravenshaw College, Cuttack P. G. Department of Chemistry 753003 Orissa India

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D. Patnaik Ravenshaw College, Cuttack P. G. Department of Chemistry 753003 Orissa India

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Abstract  

Structural defects were introduced into the potassium bromate (PB) lattice in the form of SO2−4 and Cl ions in the process of crystal growth. It was assumed that these doped crystals PB(Cl) and PB(SO2−4) are composed of a two phase system, one being the perfect PB lattice and the other distorted regions due to induced defects. Isothermal decomposition of doped and normal PB samples was carried out gasometrically between the temperature range 653–663 K. The α-t plots reveal that the process occurs through initial gas evolution, acceleratory and decay stages. It also confirmed that doping enhances the rate of the reaction, the effect being more pronounced in the case of PB(SO2−4). The data are found to be well fitted to the Prout-Tompkins and Avrami-Erofe'ev mechanisms.

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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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