REACTION RATES OF NON-ISOTHERMAL PROCESSES. I. A SIMPLE MODEL FOR FIRST ORDER KINETICS

摘要

A first order, non-isothermal model of solid phase reaction kinetics has been theoretically formulated on the basis that the heat of the chemical reaction causes a rise in the temperature of the reacting materials. Systems have been examined under adiabr.tic conditions and also under conditions of various amounts of conductive, convective, and radiative heat losses. In contrast to the isothermal system, reaction rates in a first order, non-isothermal system are found to depend upon the amount of reaction controlling species originally present, as well as upon the heat capacity, and, therefore, size and materials of construction, of the reactor. Other important variables, in addition to heat transfer coef¬ficients, are heat of reaction and activation energy.