Kinetics Study on the Exothermic Decomposition Reaction of [Cd(CHZ)3](ClO4)2

Abstract

The Temperature-jump/FTIR (T-jump/FTIR) spectroscopy was introduced to resolve the decomposition kinetics parameters of [Cd(CHZ) 3 ](ClO 4 ) 2 (CdCP) at high temperature following very rapid heating process. The increase in the absorbances during the flash pyrolysis of CdCP yielded the kinetics parameters in the range of 360-430 ℃ at 0.1 MPa Ar atmosphere: E a ＝28.6 kJ/mol and ln A＝17. The kinetics parameters of the exothermic decomposition reaction were also determined by using DSC method. The value of E a determined by T-jump/FTIR spectroscopy is smaller than that by Kissinger method and Ozawa-Doyle method, which makes these values qualitatively consistent with other energetic materials. The T-jump/FTIR spectroscopy might be resembled as the surface of explosion reaction very closely. In addition, the decomposition kinetics of evolution of the major four individual gas products was also resolved by T-jump/FTIR spectroscopy, which might be essential for detailed combustion modeling of solid energetic materials.

Flash Pyrolysis Study of M2TNR (M: Carbohydrazide or Semicarbazide) by T‐jump/FTIR Spectroscopy

“…The strategy is to use flash pyrolysis of a thin film of material at a relatively high controllable temperature as a snapshot simulation of the burning surface. 10,11 A reasonably well-defined method is T-jump/FTIR spectroscopy, 12,13 which has played an increased role in the identification of reactants and products, and the measurement of temperature and reaction rates during the thermal decomposition of such materials. The IR-active pyrolysis products and their molar fractions as a function of time are of interest because these products are reactants for the flame zone.…”