Fig. 5: CO oxidation experiments over Cu catalysts in the plug-flow reactor. | Nature Communications

Fig. 5: CO oxidation experiments over Cu catalysts in the plug-flow reactor.

From: Copper catalysis at operando conditions—bridging the gap between single nanoparticle probing and catalyst-bed-averaging

Fig. 5

During the entire experiment, the nominal inlet CO concentration was held constant at 7%, Ar was used as the carrier gas and the pressure at the inlet was 4 bar. a Time trace of the nominal O2 inlet concentration in the gas feed (red) and of the outlet concentration of CO2 (black) and O2 (dark red) measured by the QMS. b Integrated scattering intensity time evolution of the ten Cu nanoparticle patches, each comprised of 100 nanoparticles. Inset is a schematic of the reactor with the nanoparticle array patches color-coded in blue with respect to their position in the bed. Arrows indicate flow direction. c Measured CO2 outlet concentration (black) and integrated patch scattering intensity (blue) plotted as a function of the nominal inlet O2 concentration during O2 concentration increase in the feed. d CO2 production and active catalyst fraction simulated with a microkinetic model using ten CSTRs in series.

Back to article page