Abstract
A study of the atmospheric p pressure kinetics of the K/sub 2/CO/sub 3/-catalyzed steam gasification of activated carbon and Illinois No. 6 coal char is presented. The data were obtained using an electrobalance and experimental conditions which excluded mass and heat transport limitations. A model which assumes that the reaction rate is proportional to the catalyst-solid contact area was used to analyze the data. The porosity was related to solid surface area by using the grain model to describe pore structure. The model fits well the data in the complete range of operating conditions used. Activation energies of 58 and 62 kcal/mol obtained for coal and activated carbon, respectively, are independent of conversion and suggest a unique reaction path. 17 refs.
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