Abstract
A new and simple methodology for the study of the adsorption of carbon monoxide over a silica supported rhodium catalyst, referring to a wide range of hydrogen‐rich atmosphere (25%–75% H2), in experimental conditions compatible with the operation of fuel‐cells is presented. Experimentally, it is based on an inverse gas chromatographic technique known as reversed flow gas chromatography (RFGC), which is combined with the appropriate mathematical analysis which permits the measurement of adsorption, desorption, and surface reaction rate constants, as well as local adsorption energies, local isotherms, and surface diffusion coefficients. The values of the parameters of the present work vary with the hydrogen amount into the H2‐rich gas atmosphere and they are comparable to those obtained by other experimental, as well as theoretical techniques.
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