Fig. 5: Pulse chemisorption experiments using different catalysts.
From: Ruthenium-cobalt single atom alloy for CO photo-hydrogenation to liquid fuels at ambient pressures

a CO pulse profile with CO (m/z = 28) and CO2 (m/z = 44) signals. b H2 isotopic pulse profile with H2 (m/z = 2), D2 (m/z = 4) and HD (m/z = 3) signals.