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1 摘要 The
adsorbate-mediated strong metal-support interaction (A-SMSI) offers a
reversible means of altering the selectivity of supported metal catalysts,
thereby providing a powerful tool for facile modulation of catalytic
performance. However, the fundamental understanding of A-SMSI remains
inadequate and methods for tuning A-SMSI are still in their nascent stages,
impeding its stabilization under reaction conditions. Here, we report that the
initial concentration of oxygen vacancy in oxide supports plays a key role in
tuning the A-SMSI between Ru nanoparticles and defected titania (TiO 2-x ).
Based on this new understanding, we demonstrate the in situ formation of ASMSI
under reaction conditions, obviating the typically required CO 2 -rich
pretreatment. The as-formed A-SMSI layer exhibits remarkable stability at
various temperatures, enabling excellent activity, selectivity and longterm
stability in catalyzing the reverse water gas-shift reaction. This study
deepens the understan
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