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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.
Cited literature [57 references]
https://hal-ifp.archives-ouvertes.fr/hal-02044024
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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
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
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bazin_vol60n5.pdf
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