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Journal of thermal analysis

, Volume 37, Issue 11–12, pp 2693–2699 | Cite as

Role of γ-irradiation and Ba2+ doping on the isothermal decomposition of caesium bromate

  • D. Bhatta
  • G. Padhee
Article

Abstract

Role ofγ-irradiation and Ba2+ doping on the isothermal decomposition of caesium bromate has been investigated gasometrically. It is seen that decomposition proceeds in a molten/semi-molten state presumably due to formation of an eutectic between the product bromide and the host material, i.e., bromate. The process exhibits stages: (i) initial gas evolution (initial puff) (ii) short acceleratory and (iii) long decay. The data are analysed in the light of theories of different kinetic models like Prout-Tompkins, Avrami-Erofeev and explore that irradiation as well as doping enhance decomposition.

Keywords

Polymer Physical Chemistry Inorganic Chemistry Bromide Kinetic Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Mittels Gasometrie wurde die Rolle von Bestrahlung und Versetzen mit Ba2+ bei der isothermen Zersetzung von Cäsiumbromat untersucht. Es zeigte sich, daß die Zersetzung in einem geschmolzenen/semi-geschmolzenem Zustand erfolgt, wahrscheinlich infolge der Bildung eines Eutektikums zwischen dem Bromidprodukt und der Wirtssubstanz Bromat. Dieser Prozeß läuft in mehreren Schritten ab: (i) anfängliche Gasentwicklung, (ii) kurze Beschleunigung und (iii) langes Abklingen. Die Angaben wurden hinsichtlich von Theorien verschiedener kinetischer Modelle, wie z.B. Prout-Tompkins oder Avrami-Erofeev untersucht und zeigen, daß sowohl Bestrahlung als auch Versetzen die Zersetzung begünstigen.

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Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1991

Authors and Affiliations

  • D. Bhatta
    • 1
  • G. Padhee
    • 1
  1. 1.Nuclear Chemistry Laboratory, Department of ChemistryUtkal UniversityBhubaneswar-4India

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