Supported CeO2 catalysts in technical form for sustainable chlorine production

► HCl oxidation to Cl2 is studied over supported ceria catalysts. ► ZrO2 enables to attain high dispersion and tunes the electronic properties of CeO2. ► CeO2/ZrO2 is a cost-effective alternative to RuO2-based catalysts. ► Pilot tests over mm-sized bodies for 700 h evidence outstanding performance.