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Abstract: A simple and rapid method for the determination of metal dispersion of technical catalysts is presented, which is based on temperature-programmed desorption (TPD) of pre-adsorbed CO in a continuous-flow reactor at atmospheric conditions. A commercial Pt/Al2O3 diesel oxidation catalyst is studied as an example. In the TPD spectra, desorption of CO as well as CO2 is considered. Furthermore, a pulse adsorption technique is applied to better understand the adsorption–desorption behavior and the oxidation of CO. Metal dispersion based on the TPD methods presented agrees well with data derived from H2 and CO chemisorption measurements using commercial set-ups. [Copyright &y& Elsevier]

Highlights: [•] Experimental and numerical study on preferential CO oxidation, WGS and RWGS over Rh catalysts. [•] Thermodynamically consistent surface reaction kinetics presented. [•] Stagnation-flow reactor set-up proposed as lab reactor for studying catalytic kinetics. [•] Applicability of the reaction kinetics successfully tested by modeling WGS and RWGS in tubular flow reactor. [Copyright &y& Elsevier]

Highlights: [•] High hydrogen yields in partial oxidation of ethanol to hydrogen on Rh/Al2O3. [•] Axial concentration and temperature profiles inside monolithic channels measured. [•] Total/partial oxidation zone at catalyst entrance followed by reforming zone. [•] Homogeneous gas-phase reactions in front of the catalyst produce acetaldehyde. [•] Not all channels behave alike due to temperature gradient across the monolith. [ABSTRACT FROM AUTHOR]