Enhancement of O2 dissociation on Au(111) by adsorbed oxygen: Implications for oxidation catalysis

Article Abstract:

The dissociation probability of O2 on the reconstructed, Au(111)-herringbone surface is dramatically shown to increase by the presence of some atomic oxygen on the surface. The results indicate that the coverage dependence of the activation energy for dissociation (deltaE(sub dis)) and preexponential factor (nu(sub d)) could be responsible for the unusual desorption kinetics, which implies a possible energy barrier for O2 dissociation on Au(111).

Gold, Dissociation, Dissociation reactions

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A highly efficient organocatalyst for direct Aldol reactions of ketones with aldehydes

Article Abstract:

The catalysis of the direct Aldol reaction of 4-nitrobenzaldehyde with acetone is carried by preparing and evaluating the L-proline amides derived from various chiral beta-amino alcohols. The observation shows high diastereoselectivity of 95/5 for the anti Aldol product from the reaction of cyclohexanone.

Aldehydes, Ketones

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Highly active, immobilized ruthenium catalysts for oxidation of alcohols to aldehydes and ketones. Preparation and use in both batch and flow systems

Article Abstract:

A highly active immobilized ruthenium catalyst, which can be successfully used in oxidation of alcohols to aldehydes and ketones, is developed. The ruthenium catalyst was found to have activity that is higher than that of the original nonimobilized catalyst.

Ruthenium, Metal catalysts

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