Kinetics of the regeneration of a cracking catalyst derived from TPO measurements

Regeneration kinetics of a cracking catalyst was studied by temperature pro grammed oxidation (TPO) in a microreactor system. The CO and CO2 responses were detected as a function of time while heating the sample at a constant rate. Different oxygen concentrations (0.5-2.0%) and heating rates (5 and 1 0 K/min) were applied. Three kinetic models were tested and the parameters were estimated by non-linear regression. The models were capable of describ ing the experimental data adequately and the parameters were physically acc eptable. (C) 2001 Elsevier Science Ltd. All rights reserved.