ORBi: Lambert Stéphanie - Methods for the preparation of bimetallic xerogel catalysts designed for chlorinated wastes processing

Reference : Methods for the preparation of bimetallic xerogel catalysts designed for chlorinated was...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Chemical engineering
	To cite this reference:	http://hdl.handle.net/2268/7056

Title :	Methods for the preparation of bimetallic xerogel catalysts designed for chlorinated wastes processing
Language :	English
Author, co-author :	Lambert, Stéphanie [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
	Ferauche, Fabrice [Université de Liège - ULG > Chimie appliquée > Génie chimique - Chimie physique appliquée > >]
	Heinrichs, Benoît [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
	Tcherkassova, Natalia [Université de Liège - ULG > Chimie appliquée > Génie chimique - Chimie physique appliquée > >]
	Pirard, Jean-Paul [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Génie catalytique >]
	Alié, Christelle [Université de Liège - ULg > > Chimie générale et chimie physique >]
Publication date :	1-Aug-2006
Journal title :	Journal of Non-Crystalline Solids
Publisher :	Elsevier Science Bv
Volume :	352
Issue/season :	26-27
Pages :	2751-2762
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0022-3093
City :	Amsterdam
Keywords :	[en] catalysis ; nuclear and chemical wastes ; silica ; sol-gels (xerogels)
Abstract :	[en] The aim of this work is to simplify and generalize the synthesis procedure of bimetallic supported catalysts by sol-gel process. For Pd-Ag/SiO2, co-gelled xerogels catalysts a number of synthesis procedures were compared: use of one or two specific alkoxides able to form a chelate with palladium and/or silver cations, reagent mixing in one or two steps, use of industrial grade chemicals instead of laboratory grade chemicals. The catalysts obtained are quite similar: same metal dispersion, same tailored morphology, same localization and accessibility of Pd-Ag alloy nanoparticles inside microporous silica, same activity and selectivity for hydrodechlorination of 1,2-dichloroethane into ethylene. For catalyst production at large scale the synthesis can be achieved in one step with 3-(2-aminoethyl)aminopropyltrimethoxysilane of industrial grade as chelating alkoxide, tetraethylorthosilicate (TEOS) of industrial grade and ethanol denatured with diethyl phthalate. (c) 2006 Elsevier B.V. All rights reserved.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Permalink :	http://hdl.handle.net/2268/7056
	also: http://hdl.handle.net/2268/20048

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