Measurement, Local Humidity, Optical Fiber, Infrared Absorption, Narrow Band Pass Filter, Measuring System. Calibration Test

Abstract

Catalytic combustion is controlled not only by surface reactions but also by gas phase reactions. When propane is used as fuel, contribution of gas phase reaction becomes significant, and fundamental information about gas phase reactions becomes important. From this point of view, experimental and theoretical studies were carried out for the catalytic combustion of propane on a platinum catalyst with a gas phase reaction. The platinum catalyst was placed near the stagnation point of a circular cylinder. Temperature and concentration profiles near the catalytic surface were measured These profiles were compared with the result of numerical calculations based on the three-step surface and gas phase reactions. Kinetic schemes proposed by Bracco et al. and by Bruno et al. have problems concerning their overall rate constants. So, new rate constants were proposed, and it was shown that calculated results based on new rate constants well predict the experimental results.