Front Cover: The Effect of Iron and Vanadium in VOy/Ce1‐xFexO2‐δ Catalysts in Low‐Temperature Selective Catalytic Reduction of NOx by Ammonia (ChemCatChem 9/2020)

The Front Cover shows that NOx removal from exhaust gases is very fast with catalysts containing vanadia supported on ceria while iron in the ceria support “throws a wrench in the works”. In their Full Paper, S. Keller et al. show that iron boosts the catalytic performance of bare Ce1‐xFexO2‐δ solid solutions while, unexpectedly, iron is detrimental when vanadia is supported on their surface. In situ XANES, operando DRIFTS and EPR studies showed that Fe3+ is partly reduced to inactive Fe2+, favours clustering of VOy sites and damages active V‐O‐Ce junctions. More information can be found in the Full Paper by S. Keller et al.