Inside Cover: Quantification of Redox Sites during Catalytic Propane Oxychlorination by Operando EPR Spectroscopy (Angew. Chem. Int. Ed. 7/2021)

Abstract

Operando EPR gets hot In their Research Article on page 3596, Guido Zichittella, Yevhen Polyhach, Javier Pérez-Ramírez, and co-workers demonstrate operando EPR spectroscopy as a pivotal technique to assess the oxidation state of CrPO4 and EuOCl catalysts during high-temperature catalytic propane oxychlorination. As depicted in the cover picture, this enables the quantification of catalytically active centers, as the redox couple Cr3+ (gold)/Cr2+ (lilac), whose formation was correlated with the productivity of propylene.