Thermal decomposition of ammonium perchlorate

A physico-geometric approach to the kinetics of solid-state reactions as exemplified by the thermal dehydration and decomposition of inorganic solids

As = factor of Arrhenius surface pyrolysis law, cm/s Bs = factor of Krier-T'ien-Sirignano-Summerfield (KTSS) surface pyrolysis law, cm/s Ks c — specific heat, cal/g K d* = characteristic thickness of condensed phase, cm ddz = dark-zone thickness, cm dfz = fizz-zone thickness, cm dtra = transition thickness, cm Es = surface activation energy, cal/mole k = thermal conductivity, cal/cm s K ^ — fringes distance, jjim ^dz = average molecular mass of dark-zone mixture, g/mole n = exponent in burning rate pressure dependence nd = exponent in dark-zone thickness pressure dependence n0 = overall reaction order in dark zone nTs = exponent in surface temperature pressure dependence p — pressure, atm rb = steady burning rate, cm/s

K. J. Kraeutle

Papers

The Thermal Decomposition of Orthorhombic Ammonium Perchlorate Single Crystals