REGENERATION OF DEACTIVATED CU-ZN-CR-AL CATALYST FOR CYCLOHEXANOL DEHYDROGENATION .1. KINETIC RELATIONSHIPS IN REGENERATION OF CYCLOHEXANOLDEHYDROGENATION CATALYST

A kinetic study has been made of the oxidation of tarry, resinous subs tances (RS) and the oxidation of copper in the regeneration of deactiv ated Cu-Zn-Cr-Al catalyst for cyclohexanol dehydrogenation. In the cou rse of regeneration, the rate of RS oxidation increases, owing to oxid ation of the catalyst surface, leading to an increase in the number of active centers and an increase in the preexponential factor. It has b een established that CO2 and CO are formed through a parallel scheme, with the CO probably being formed through a reaction of decarbonylatio n of oxygen-containing components of the RS.