Support-Rebalanced Cu-Ce-V/γ-Al(2)O(3) Catalysts for Durable Fixed-Bed HCl Oxidation: Redox-Acid-Oxygen Rebalancing for Chlorine Recycling.

Redox-acid-oxygen rebalancing in Cu-Ce-V/γ-Al2O3 catalysts enables durable fixed-bed HCl oxidation with 78.2% conversion and 17.04 mol∙kg act -1 ∙h -1 yield.

• Why it matters: Efficient chlorine recycling via HCl oxidation requires catalysts that combine high activity with long-term stability, which remains a challenge for practical applications.
• What they did: A spherical Cu-Ce-V/γ-Al2O3 catalyst was developed by integrating redox-active oxides with mechanically robust alumina pellets, achieving stable operation over 200 hours and retaining over 97% of Cu and surface area.
• The result: The alumina support induces a redox-acid-oxygen balance that enhances catalyst stability by moderating surface evolution and preventing structural degradation, enabling effective chlorine recycling.