A process stimulator was used for the analysis of steady-state results from a laboratory-scale tubular reactor for the oxidation of carbon monoxide over a plantinum catalyst. From a set of 14 steady-state experiments, temperature profiles wer stimulated with two adjustable parameters recovered by optimizing the fit: k(o), the pre-exponential portion of the rate constant, and h(out), the outer wall heat transfer coefficient for the reactor tube. Simulation showed that despite elaborate insulation the reactor did not behave adiabatically. Simulation also predicted fairly well the magnitude of phenomena such as ignition extinction, and rate hysteresis (caused by changes in feed temperatures or concentrations) but at temperatures below the experimental values.