Modelling Study of the Temperature-Programmed Conversion Curves of NO Reduction by CO over Supported Pt- and Rh-Based Catalysts

摘要: We have attempted to model the rate of NO transformation on a sintered Pt–Rh/Al2O3 three-way catalyst (TWC) in various temperature and conversion conditions close actual ones TWCs. For this purpose expression, previously established from kinetic measurements performed at single 300°C, was used. The dependency thermodynamic parameters, using non-linear optimisation, has been determined. Then, temperature-programmed experiments, fixed-bed flow reactor atmospheric pressure under differential conditions, modelled such parameters. A similar procedure achieved for modelling TP experiments Rh/Al2O3. Both results compared discussed light previous surface characterisations.