PNNL

Abstract

Fluctuation in the composition of reactant gas mixtures often leads to activity and selectivity variations in automotive catalysts. Now, time-resolved operando spectroscopy sheds light on the transient changes of surface species for a commercially applied catalyst and leads to process optimization. This study demonstrates how application of high time-resolution operando X-ray absorption spectroscopy can open new avenues toward the understanding of structure/function relationships in heterogeneous catalysis under transient, non-steady state conditions.