Trimetallic Catalyst
Mostrando 1-3 de 3 artigos, teses e dissertações.
-
1. Efeito da concentração de irídio sobre as propriedades de catalisadores do tipo Pt-Ge-Ir/Al2O3. / Effect of concentration of iridium on the properties of type catalysts Pt-Ge-Ir/Al2O3.
The effect of iridium content on the activity, selectivity and stability of platinum, germanium and iridium supported in alumina catalysts for oil naphta catalytic reforming was studied in this work. Samples were prepared by the impregnation of the metallic salts (hexachloroplatinic acid, hexachoroiridic acid and germanium chloride) over g-alumina in order t
Publicado em: 2008
-
2. Preparation, characterization, and application of trimetalic catalysts for direct ethanol fuel cells: Pt-Ru-Sn/C / Preparação, caracterização e aplicação de catalisadores trimetálicos para a oxidação de etanol em célula a combustível direta: Pt-Ru-Sn/C
This work aimed at developing a method for the obtention of carbon-supported Pt nanocatalysts modified with Rhutenium and Tin, which were evaluated for ethanol eletrooxidation in direct fuel cells. To obtain these catalysts, we employed the Pechini method, which consists in the decomposition of a polymeric precursor. Many nanocatalysts containing various PtR
Publicado em: 2007
-
3. Avaliação do desempenho de catalisadores do tipo Pt-Re-Sn/Al2O3 na reforma de n-octano.
Pt-Re-Sn/Al2O3-Cl catalysts were evaluated in the n-octane reforming to produce aromatics specially xylenes and were compared with the correspondent monometallic(Pt/Al2O3) and bimetallic (Pt-Re and Pt-Sn/Al2O3) ones. The samples were prepared by coimpregnation and successive impregnations of alumina, with the solutions of the metallic precursors. The solids
Publicado em: 2003