N2O Reduction by CO over an Alumina-Supported Pt Catalyst: Forced Composition Cycling

摘要: The reaction dynamics of N{sub 2}O reduction by CO over an alumina-supported catalyst have been examined using forced square-wave cycling and concentrations. experiments were carried out isothermal recycle reactor operated at 499 K with various values the frequency phase angle between two composition cycles. Time-average conversions as high five times steady-state conversion attained during feed cycling. observed dynamic behavior system has described a kinetic model consisting three elementary steps which incorporates main features, namely, adsorbate-induced Pt surface-phase transformation self-exclusion adsorption on surface. was able to describe quantitatively experimental results multiplicity reaction. Thus, simple provides consistent explanation for both rate enhancement CO{sub 2} response input multiplicity. 43 refs., 9 figs., 1 tab.