Abstract
AbstractThis note reports a study of the effect of inert diluents alone or in mixtures on the well known spontaneous oscillations in CO oxidation over a Pt catalyst. Irregular oscillations were observed with a nitrogen diluent but not when this diluent was replaced by argon. Adding SF6 at levels above 3.3% to argon induced oscillations, but when a similar level of CO2 or H2O was added to the argon diluent, oscillations were not found. Oscillations were observed only at the feed composition where one of the bifurcated steady states vanished.
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