THERMODYNAMICS AND KINETICS FOR ZERO-EMISSION CATALYTIC DEVICES

Thermodynamic and kinetic problems are examined, as encountered in the design of catalytic devices for the removal of pollutants in the ppm range, i.e., for ultrapurification. The customary approximations used in catalytic reaction engineering are examined and found to be unrelia ble over wide ranges of process variables. To circumvent the uncertain ty created by risky extrapolations of design rate equations, the metho d of microkinetic analysis suggests itself. But its application relies on a database of rate constants that must be accumulated through exte nsive scientific work. In the meantime, it is noted that the rate of r emoval of pollutants in ultrapurification must be first order with res pect to pollutant concentrations, as the rate depends linearly on the thermodynamic potential for reaction.