Description of Solid-Gas Reactions. Conclusions of Thermoanalytical and Electron Optical Studies on Calcium Carbonate Thermal Decomposition
Thermal decomposition of calcium carbonate was studied with thermoanalytical and electron optical methods. Experimental results detailed in previous papers are discussed from the point of view of kinetic description.Imperfectness of the common kinetic equation using the reacted fraction,α , as the co-ordinate of the reaction and its effect on kinetic parameters are demonstrated. A new type of general equation analogous with physical kinetic laws is proposed for simple, reversible heterogeneous reactions. It is applied for the determination of some characteristics of CaCO3 powder thermal decomposition.
KeywordsCalcium Carbonate Kinetic Calculation Local Quantity Free Surface Area Carbon Dioxide Uptake
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