Kinetics of the Catalytic Cracking of Paraffins at Very Short Times on Stream

The kinetics for the cracking of n-heptane, n-decane, n-dodecane and n-tetradecane has been investigated in a reaction system in which conversion and yields can be measured at times on stream below 10 sec. Under these experimental conditions the influence of the adsorption terms in the kinetic expression is negligible. The catalyst decay is better represented by a conversion-dependent time on stream function.