IMPROVEMENT OF THE RATE EQUATION BASED ON INTERFACE REACTION AND DIFFUSION FROM ISOTHERMAL TO NON-ISOTHERMAL

Rate equations of non-isothermal kinetics of solid decomposition, which involve the factors of temperature, pressure of gaseous product and structure parameters of solid, are derived from the models of the interface reaction and the diffusion of gaseous product respectively. The definition of the correction term in the rate equations represents the influence of the factors on the reaction rate. The effect of the correction term on rate equations are extrapolated, based on the data of non-isothermal thermal decomposition of calcium carbonate. It is shown that considering the effect of the correction term on rate equations is meaningfully under non-isothermal conditions.