• • Ru-based catalysts exhibit superior chlorine resistance via the Deacon reaction (4HCl+O2→2Cl2+H2O), enabling sustained activity in CVOCs oxidation, whereas Pt, Pd, and Rh catalysts suffer severe deactivation by Cl species.
• • The review identifies that Ru-based catalysts achieve high COx selectivity and deep oxidation of intermediates due to strong metal-support electron transfer and redox properties, with Ru being one of the most cost-effective platinum-group metals.
• • Structural regulation strategies—including active component design, support selection (e.g., CeO2, TiO2, ZSM-5), and surface modification—are critical to optimizing catalytic performance and chlorine resistance, as evidenced by studies on Ru/CeO2 and Ru/TiO2 systems.
• • Novel preparation methods and reaction component effects are summarized, highlighting that atomically dispersed Ru and facet-engineered supports (e.g., {001}-TiO2) can further enhance low-temperature activity and stability, as demonstrated by recent studies.