Journal of thermal analysis

, Volume 50, Issue 4, pp 647–654 | Cite as

Comparative study of isothermal and non-isothermal thermokevetic processes

  • C. Telea
  • O. Chilom
  • Gabriela Geambas
  • V. Popa
Article

Abstract

In this paper a graphical and analytical method is presented for generating reaction isotherms from a set of non-isotherms andvice versa. The method was tested by using computer generated curves. The method was also checked by studying the kinetics of dehydration of calcium oxalate in a static atmosphere. The reaction was monitored in both non-isothermal (with nine heating rates between 0.5 and 60°C min−1) and isothermal modes (at 150, 160 and 170°C). The 160°C isotherm obtained experimentally was compared with that obtained by graphical method from non-isotherms determined experimentally and the differences of α were less than 3%.

Keywords

isotherm kinetic non-isotherm 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • C. Telea
    • 1
  • O. Chilom
    • 1
  • Gabriela Geambas
    • 1
  • V. Popa
    • 1
  1. 1.Institute of Physical ChemistryRomanian AcademyBucharestRomania

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