HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment

Abstract : Highly dispersed supported bimetallic PdPt catalysts were prepared by incipient wetness co-impregnation of alumina with platinum bis-acetylacetonate Pt(Acac)2 and palladium bis-acetylacetonate Pd(Acac)2. The resulting Pt4Pd/Al2O3 and Pt6Pd/Al2O3 catalytic systems dedicated to hydro-dearomatization in presence of sulfur were characterized by X-ray absorption spectroscopy, transmission electron microscopy and volumetric H2-O2 titration. Direct structural evidence is given of the presence of nanometer bimetallic particles. Moreover, the complete set of results indicates a "cherry-like" structure for the bimetallic clusters with a preferential distribution of palladium atoms at the cluster surface. Catalytic results shows that the optimum composition leading to the appropriate surface structure must be adjusted as a function of the size of the clusters.
Document type :
Journal articles
Complete list of metadata

Cited literature [57 references]  Display  Hide  Download

Contributor : Edp Sciences Connect in order to contact the contributor
Submitted on : Thursday, February 21, 2019 - 11:50:04 AM
Last modification on : Monday, March 28, 2022 - 11:26:04 AM
Long-term archiving on: : Wednesday, May 22, 2019 - 7:54:58 PM


Publication funded by an institution




D. Bazin, D. Guillaume, Ch. Pichon, D. Uzio, S. Lopez. Structure and Size of Bimetallic Palladium-Platinum Clusters in an Hydrotreatment. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole (IFP), 2005, 60 (5), pp.801-813. ⟨10.2516/ogst:2005057⟩. ⟨hal-02044024⟩



Record views


Files downloads