Regulation of metal-support interaction in PtCeAl catalyst to control NH3 formation in NOx reduction

Precision modulation of metal-support interactions is essential for optimizing catalytic activity and selectivity in automotive exhaust treatment. In this study, we systematically regulate the strength of Pt-CeO 2 interaction by altering Pt anchoring strategies on Al 2 O 3 , thereby achieving a controlled balance between NO x reduction efficiency and by-product formation. Comprehensive structural and spectroscopic analyses reveal that increasing the interaction strength (PtCeAl-mix