Redox-Acidity Interplay in Eu-Promoted PtSn<sub>2</sub> Catalysts for Selective and Stable Propane Dehydrogenation.

The high carbon tolerance of the Eu‐modified catalyst is further corroborated by XPS analysis (Figure S14 ) of the survey spectra and the C 1s core‐level emission spectra, revealing a clear trend in surface carbon accumulation: 2%Eu‐PtSn < 2%Gd‐PtSn < 2%Ce‐PtSn.

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