Palladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene II. Surface composition of alloy particles

Heinrichs, Benoît; Noville, Francis; Schoebrechts, Jean-Paul; Pirard, Jean-Paul

doi:10.1006/jcat.2000.2816

Article (Scientific journals)

Palladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene II. Surface composition of alloy particles

Heinrichs, Benoît; Noville, Francis; Schoebrechts, Jean-Paul et al.

2000 • In Journal of Catalysis, 192 (1), p. 108-118

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https://hdl.handle.net/2268/20364

DOI
10.1006/jcat.2000.2816

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Keywords :

surface composition; CO chemisorption; sol-gel catalysts; hydrodechlorination; Pd-Ag alloys

Abstract :

[en] The surface composition of alloy particles in Pd-Ag/SiO2 hydrodechlorination (HDC) sol-gel catalysts has been determined by combining three experimental techniques, carbon monoxide chemisorption, X-ray diffraction, and transmission electron microscopy, Values obtained through this method show a very marked silver enrichment of the surface, as expected: as a consequence of the important gap between palladium and silver surface energies. These values are in complete agreement with surface composition curves calculated in other studies by means of Auger electron spectroscopy and infrared spectroscopy. The influence of sample pretreatment temperature as well as the influence of carbon monoxide on surface composition are discussed. (C) 2000 Academic Press.

Disciplines :

Chemical engineering
Materials science & engineering

Author, co-author :

Heinrichs, Benoît ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée

Noville, Francis ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée

Schoebrechts, Jean-Paul

Pirard, Jean-Paul ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Chimie physique appliquée

Language :

English

Title :

Palladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene II. Surface composition of alloy particles

Publication date :

2000

Journal title :

Journal of Catalysis

ISSN :

0021-9517

eISSN :

1090-2694

Publisher :

Academic Press, San Diego, United States - California

Volume :

192

Issue :

Pages :

108-118

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 28 August 2009

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