Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (02): 134-138.doi: 10.3866/PKU.WHXB20050205

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Calculating Apparent Activation Energy of Adiabatic Decomposition Process Using Pressure Data

QIAN Xin-Ming;LIU Li;FENG Chang-Gen   

  1. State Key Laboratory for Prevention and Control of Explosion Disasters, Beijing Institute of Technology, Beijing 100081
  • Received:2004-06-28 Revised:2004-08-30 Published:2005-02-15
  • Contact: QIAN Xin-Ming

Abstract: Considering the limitation of now available adiabatic kinetic analysis, a method to calculate activation energy by dealing with pressure data obtained from the adiabatic measurement is proposed. New kinetic equation is established and the apparent activation energies for the thermal decomposition of di-tert-butyl peroxide and 2-methyl-4-nitrobenzenesulfonic acid are calculated. The obtained apparent activation energies are compared with the values in the literature and the values obtained from other methods, and the difference between them and the underlying reasons are discussed.

Key words: Activation energy, Adiabatic decomposition, Pressure, Accelerating Rate Calorimeter