Fig. 3: Result of reaction route mapping for CH4 + O3 reaction on model active sites.
From: Designing main-group catalysts for low-temperature methane combustion by ozone

Calculated reaction pathways of CH4 + O3 on a Cu(0) atom, b NO molecule, c C5H5N molecule, and d H2SO4 molecule. The values of ΔE and the Ea (dark red) are shown together (Unit: kJ/mol).