ESTIMATED UPPER BOUNDS TO THE HALF-LIFE-OF THERMAL DECOMPOSITION OF AMMONIA, HYDROGEN, METHANE, AND PROPANE

摘要

An estimate is been made of the upper bound for the half-time of dissociation at 100 aim for ammonia, methane, and propane at 2800K and hydrogen at 5000° K. In each case a unimolecular reaction in the homogeneous gas phase was chosen as most suitable for this purpose. Slater's theory has been used to estimate the necessary frequency factors. The .upper bounds to the half-time for dissociation range from 3 x 10" to 6 x 10 sec. Extrapolation of decomposition rate data ob tained at ~1000°C and 1 atm pressure gives smaller values for the half-time of dissociation.