Catalytic carbophilic activation: catalysis by platinum and gold pi acids.

Platinum catalysts supported on gamma-alumina and on a variety of zeolites have been characterized and evaluated for activity in the transfer hydrogenation of propylene using butanes as the hydrogen source. Zeolite supports evaluated include both…

Chemo- and stereoselective transformations of 3-hydroxy-1,5-allenynes 1 into a variety of new and potentially useful cyclic compounds have been achieved. Substrates bearing a silyl group at the alkyne moiety undergo purely thermal or Lewis acid…

We investigate the surface reconstructions of various faces of gold and platinum theoretically with a number of embedded-atom potentials. The potentials examined include conventional models plus a sequence of models where the shape of the embedding…

A voltammetric and spectroscopic study of the adsorption and oxidation of benzoic acid on platinum and gold electrodes has been carried out in acid medium. The oxidation of benzoic acid depends on the surface structure of the platinum electrode.…

Gold catalysts have superior activity in CO and other oxidations at low temperatures. Both a small 5nm) particle size and the presence of a partly reducible oxide (ceria or a transition metal oxide) have a beneficial effect on the catalyst…

Despite occasional references in the older literature to the ability of gold to catalyze certain reactions, the metal has until recently had the reputation of being one of the least catalytically useful. The recent discovery that some supported gold…

The influence of the preparation methods on the catalytic activity for CO oxidation was markedly large for Au-TiO2

The recent surge of new interest in catalysis by gold (1.3) has led researchers to investigate the effects of adding other metals to the gold. As a result, there are a number of reactions with potential for industrial application where combinations…

P-Typecupric oxide has been deposited electrochemically on platinum and goldelectrodes from Cu(II) solutions containing various amino acids, which isvery attractive because the procedure is simple and the preparationof large-area film is possible.…

Dual diffusion of gold (Au) and platinum (Pt) into silicon is examined. When Au and Pt coexist in silicon, two levels of Au, Ec - 0.54 eV and Ev + 0.35 eV, and two levels of Pt, Ec - 0.22 eV and Ev + 0.30 eV, are observed by deep level transient…