Reaction temperature and space velocity are two of the most important process variables in catalytic reforming. They affect both the octane number of the reformate and its volumetric yield. The present study has demonstrated that there is a definite relationship between the reaction temperature and space velocity. The effect of the change in space velocity became insignificant at a temperature of 425ºC where space velocity does not seem to have an effect on the volumetric yield at a temperature of 390ºC where all lines meet. Equally, at a space velocity of 4.3 the temperature does not seem to have an effect on the volumetric yield, and the effect of temperature became insignificant at a space velocity of 4.6 .