Preferential oxidation of CO on a La-Co-Ru perovskite-type oxide catalyst

Operando TEM of Ru/RuO2 Catalyst Performing CO Oxidation

CO oxidation is a model reaction that is ideally suited for performing operando TEM. Several catalysts for oxidizing CO to CO2 have been extensively studied, including ruthenium and its oxide. Despite these efforts, there has still been considerable debate regarding the most active structure for this system [1,2,3]. In fact, many of the fundamental studies performed on this ruthenium catalyst w...

Electrochemical Preferential Oxidation of CO in Reformate

Effects of Excess Cobalt Oxide Nanocrystallites on LaCoO3 Catalyst on Lowering the Light off Temperature of CO and Hydrocarbons Oxidation

Catalysts with the formula of LaCo(1+x)O(3+δ), where 0 ≤ x ≤ 1, were studied for oxidation of CO and C2H6 in a synthetic exhaust gas, comprising 6.0 % CO and 0.2 % C2H6 in Ar. Ethane was selected as a model for hydrocarbons in the exhaust gas. The performance of catalysts is correlated to their properties, particularly their ...

Catalytically Active States of Ru(0001) Catalyst in CO Oxidation Reaction

Identifying the composition of the catalytically active state of metal catalysts under dynamic operating conditions is of particular importance for oxidation catalysis. We report here new insights into the chemical identity of different catalytically active states formed on a Ru(0001) catalyst during the CO oxidation at different reaction temperatures. The changes in the surface composition of ...

Effect of Reactor Heat Transfer Limitations on Co Preferential Oxidation

Our recent studies of CO preferential oxidation (PrOx) identified systemic differences between the characteristic curves of CO conversion for a microchannel reactor with thin-film wall catalyst and conventional packed-bed lab reactors (m-PBR’s). Strong evidence has suggested that the reverse water-gas-shift (r-WGS) side reaction activated by temperature gradients in m-PBR’s is the source of the...