An equilibrium—interface model for solid decomposition

✍ Scribed by Jacob Mu; D.D Perlumutter

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 750 KB
• Volume: 35
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(80)80057-1

✦ Synopsis

A model IS proposed to predict the transient reactlon temperature and extent of reactlon for a sohd decomposltlon m terms ofphyslcal transport coefficients and thermodymamlcdata. allowmg also tor the effect of changing particle size arIsIng from possible density differences between reactant and product NumencaJ calculations based on the derived model detail the influences of the transport coefftcients, the heat of reactlon, and the change of particle size The results show many of the characteristics of thermal decomposltlons reported m the hterature, mcludmg s~gmo~dal conversion-time behavtor, pseudo-steadystate temperature plateaus, and self coohng Earlier models are shown to be subsumed as u-nportant special cases Because It reqmres only thermodynamic and physical transport data, the model 1s entirely Independent of any empmcal fits to kmetlc data, It 1s most applicable to high temperature, endothermic systems that produce product layers restrlctmg heat and mass transfer