Effects of Dynamic Lattice Displacement Generated by Surface Acoustic Wave and Resonance Oscillation on Heterogeneous Catalysis

摘要

The effects of dynamic lattice displacementgenerated by surface acoustic wave (SAW) and resonanceoscillation (RO) on heterogeneous catalysis were reviewed.Both SAW and RO were shown to have the ability tosignificantly change the selectivity of ethanol dehydrogenationand dehydration on Cu and Ag catalysts. A remarkable activityincrease in ethanol oxidation on Pd with RO was demonstrated.Large dynamic lattice displacement vertical to the surfacecaused changes in the surface potential and the work functionwhich are associated with the catalyst activation. The concept ofdynamic lattice displacement is useful for the design of aheterogeneous catalyst with artificially controllable functions forchemical reactions.