Metal redispersion selectivity

Surface thermodynamic considerations can be helpful in an understanding of the complex phenomena which occur in supported metal catalysts. Indeed, the physical and chemical interactions between metal, substrate and atmosphere lead to wetting and spreading phenomena (of the active catalyst over the substrate and of the substrate over the metal) which are relevant for the physical (sintering, redispersion) as well as chemical (suppression of chemisorption, modification of selectivity, enhanced activity) manifestations of supported metal catalysts. 

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