Fig. 4: DFT calculations of Ru1/CeO2 and Ru10/CeO2 catalysts for NO oxidation.
From: A single site ruthenium catalyst for robust soot oxidation without platinum or palladium

Reaction steps during catalyzing NO oxidation (Ru atom, black green; Ce atom, gray; O atom, red; N atom, blue). Color code: Ru1/CeO2 (brown line) and Ru10/CeO2 (blue line).