Topic
Platinum
About: Platinum is a research topic. Over the lifetime, 49675 publications have been published within this topic receiving 1150035 citations. The topic is also known as: Pt & element 78.
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TL;DR: In this paper, the genesis of the high activity of zirconium oxide promoted by platinum and sulfate ion (Pt/SO 4 2− -ZrO 2 ) for skeletal isomerization of butane and pentane in the presence of hydrogen is studied in terms of the interaction of the catalyst with molecular hydrogen.
281 citations
TL;DR: In this article, a specified study was made of the phenomenon of infrared-active nitrogen adsorption on nickel, the existence of which was first shown by Eischens and Jacknow.
281 citations
TL;DR: In this paper, the use of gold on promoting PGM catalysts for the selective oxidation of various primary alcohols under mild conditions was investigated, and it was found that using these bimetallic catalysts instead of monometallic ones caused a significant change in activity in the liquid phase oxidation of alcohols.
281 citations
TL;DR: In this paper, the Pt/CNT electrode for oxygen reduction reaction has been investigated by linear sweep voltammetry and the results imply that the Pt has good potential applications in proton exchange membrane fuel cells.
281 citations
TL;DR: In this paper, a bimetallic cluster with a mole ratio of Pd : Pt = 4 : 1 was found to be the most active catalyst, twice as active as a typical colloidal palladium catalyst for diene hydrogenation.
Abstract: Refluxing mixed solutions of palladium(II) chloride and hexachloroplatinic(IV) acid in ethanol–water (1 : 1, v/v) in the presence of poly(N-vinyl-2-pyrrolidone) results in well dispersed and stable colloidal dispersions of polymer-protected palladium/platinum bimetallic clusters. The UV–VIS absorption spectra and transmission electron micrographs indicate that these bimetallic cluster particles are homogeneous in size, each particle containing both palladium and platinum atoms. Dispersions of these bimetallic clusters were used as catalysts for the selective hydrogenation of cycloocta-1,3-diene to cyclooctene at 30 °C under hydrogen gas at atmospheric pressure. The catalytic activity for the partial hydrogenation was found to depend on the metal composition of the particles. A bimetallic cluster with a mole ratio of Pd : Pt = 4 : 1 was the most active catalyst, twice as active as a typical colloidal palladium catalyst, for the diene hydrogenation. The dependence of the activity and the selectivity on the surface structure of the cluster particle strongly indicates that the cluster particle with the highest catalytic activity had a ‘Pd-surrounded Pt core’ structure.
280 citations