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Active Ensemble Structures for Selective Oxidation Catalyses at Surfaces

Active Ensemble Structures for Selective Oxidation Catalyses at Surfaces [Pg.43]

Molecular-level design of catalytic ensemble structures on surfaces in a controllable manner, based on new chemical concepts and strategies regarding composition or structure, provides a promising opportunity for the development of novel and efficient catalysts active for selective oxidation. Novel strategies and concepts for the creation of active ensemble structures on flat and porous surfaces may emerge from self-assembly and in situ transformation of precursors immobilized on the surfaces, with the aid of in situ characterization by sophisticated physical techniques [1-6]. [Pg.43]

Chiral Self-Dimerization of Vanadium Schiff-Base Complexes on Si02 and Their Catalytic Performances lor Asymmetric Oxidative Coupling of 2-Naphthol [Pg.44]

Asymmetric Heterogeneous Catalysis Using Supported Metal Complexes [Pg.44]

In the last three decades, we have designed and successfully prepared various supported metal complexes on oxide surfaces that exhibit unique catalytic activities and selectivities that are different from those of their homogeneous analogues [3,4,9, 12-15]. With the aid of several sophisticated spectroscopic techniques, the structures and roles of catalytically active species on surfaces have been characterized and identified [3, 4,9,12-25]. Chemical interactions between metal complexes and oxide surfaces can provide new reactivity of metal species by the construction of a spatially controlled reaction environment and the formation of unsaturated active metal species, leading to high catalytic activity, selectivity and durability [21-25]. [Pg.44]




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Activated oxidation

Activation oxidation

Activator selection

Active oxides

Activity oxidation

Catalysis activated

Catalysis activity

Catalysis selective

Catalysis selective oxidation

Catalysis surfaces

Ensemble structure

Ensemble surface

For ensemble

Oxidation catalysis

Oxidative activation

Oxides activated

Oxides catalysis

Oxides, structure

Oxidizing activators

Selective activation

Selective activity

Structural selection

Structuration at surfaces

Surface selection

Surface selective

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