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dc.contributor.authorKerdi, Fatmé
dc.contributor.authorCaps, Valerie
dc.contributor.authorTuel, Alain
dc.date.accessioned2015-05-07T13:22:36Z
dc.date.available2015-05-07T13:22:36Z
dc.date.issued2011-12-23
dc.identifier.citationInnovative Route to Prepare of Au/C Catalysts by Replication of Gold-containing Mesoporous Silicas 2011, 21:205 Physics Procedia
dc.identifier.issn18753892
dc.identifier.doi10.1016/j.phpro.2011.10.031
dc.identifier.urihttp://hdl.handle.net/10754/552437
dc.description.abstractGold-catalyzed aerobic epoxidations in the liquid phase are generally performed in low-polarity solvents, in which conventional oxide-supported catalysts are poorly dispersed. To improve the wettability of the catalytic powder and, thus, the efficiency of the catalyst, gold nanoparticles (NPs) have been dispersed on meso-structured carbons. Gold is first introduced in functionalized mesostructured silica and particles are formed inside the porosity. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900 °C under vacuum or nitrogen. Silica is then removed by acid leaching, leading to partially encapsulated gold particles in mesoporous carbon. Carbon prevents aggregation of gold particles at high temperature, both the mean size and distribution being similar to those observed in silica. However, while Au@SiO2 exhibit significant catalytic activity in the aerobic oxidation of trans-stilbene in the liquid phase, its Au@C mesostructured replica is quite inactive.
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S187538921100650X
dc.rightsArchived with thanks to Physics Procedia. http://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectMesostructured carbon
dc.subjectGold nanoparticles
dc.subjectCatalysis
dc.subjectAerobic Oxidation
dc.titleInnovative Route to Prepare of Au/C Catalysts by Replication of Gold-containing Mesoporous Silicas
dc.typeConference Paper
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.identifier.journalPhysics Procedia
dc.conference.date2010-05-20 to 2010-05-22
dc.conference.name7th International Conference on Material Sciences, CSM7
dc.conference.locationBeirut, LBN
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionIRCELYON, UMR 5256 CNRS-Université de Lyon, 2 avenue A. Einstein, 69626 Villeurbanne Cedex, France
kaust.personCaps, Valerie
refterms.dateFOA2018-06-13T11:31:49Z
dc.date.published-online2011-12-23
dc.date.published-print2011


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