Parameter estimation for Langmuir-Hinshelwood/Hougen-Watson type of kinetics in the field of automotive exhaust gas aftertreatment can be challenging as a great variety of parameter sets can result in a similar model quality as rate and inhibition parameters can interact during numerical optimization although they can be regarded independent from theory. This contribution introduces a method that enables the model-based rapid estimation of NO oxidation kinetic information on a Pt-only monolith catalyst from a straightforward set of synthesis gas test-bench experiments.