Comparison of new microemulsion prepared "Pt-in-Ceria" catalyst with conventional "Pt-on-Ceria" catalyst for water-gas shift reaction

Article Abstract:

'Pt-in-CeO(sub 2)' catalyst prepared by microemulsion method is shown to have higher activity for a water-gas shift reaction but with no formation of CH(sub 4), the side product from hydrogenation of carbon oxides using a hydrogen-rich reformate. Detailed characterization by DRIFT analysis and temperature programmed reduction clearly suggests the ceria coverage on Pt inhibits the metal from forming a strong Co adsorption.

Science & research, Research, Adsorption, Platinum compounds

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Relationship between structure and CO oxidation activity of ceria-supported gold catalysts

Article Abstract:

Gold catalysts supported on cerium oxide are prepared by solvated metal atom dispersion (SMAD), by deposition-precipitation (DP) and by coprecipitation (CP) methods and characterized. The structural and surface analyses accept the presence of a modified ceria phase in the case of the DP sample and the presence of pure ceria and gold metal crystallites in the case of the SMAD and CP samples.

Italy, Gold Compounds, Observations, Oxidation-reduction reaction, Oxidation-reduction reactions, Structure

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