Reference : Formation and structural characteristics of Pd-Ag/SiO2 and Pd-Cu/SiO2 catalysts synth...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Engineering, computing & technology : Chemical engineering
http://hdl.handle.net/2268/21110
Formation and structural characteristics of Pd-Ag/SiO2 and Pd-Cu/SiO2 catalysts synthesized by cogelation
English
Lambert, Stéphanie mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Gommes, Cédric mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Alié, Christelle mailto [Université de Liège - ULg > Département de chimie appliquée > Chimie générale et chimie physique >]
Tcherkassova, Natalia mailto [Université de Liège - ULG > Département de Chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Pirard, Jean-Paul mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Heinrichs, Benoît mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - chimie physique appliquée > > >]
2005
Journal of Non-Crystalline Solids
Elsevier Science
351
52-54
3839-3853
Yes (verified by ORBi)
International
0022-3093
Amsterdam
The Netherlands
[en] COGELLED XEROGEL CATALYSTS ; LOW-DENSITY XEROGELS ; SOL-GEL CATALYSTS ; X-RAY-DIFFRACTION ; PD-CU CATALYSTS ; SELECTIVE HYDRODECHLORINATION ; SURFACE-COMPOSITION ; SUBSTITUTED ALKOXYSILANES ; NUCLEATION PHENOMENON ; BIMETALLIC CATALYSTS
[en] Pd-Ag/SiO2 and Pd-Cu/SiO2 xerogel catalysts have been synthesized by cogelation of tetraethoxysilane (TEOS) and chelates of either Pd and Ag or Pd and Cu with 3-(2-aminoethylamino)propyltrimethoxysilane (EDAS). After an extensive study of the influences of synthesis operating variables over structural characteristics of gels, highly dispersed bimetallic Pd-Ag/SiO2 and Pd-Cu/SiO2 xerogel catalysts were obtained. These samples are then composed of completely accessible Pd-Ag and Pd-Cu alloy crystallites with sizes of 2-3.5 nm located inside silica particles exhibiting a monodisperse microporous distribution. It appears also that the metal complex acts as a nucleation agent in the formation of silica particles. (c) 2005 Elsevier B.V. All rights reserved.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
http://hdl.handle.net/2268/21110
10.1016/j.jnoncrysol.2005.10.019

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