Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts

Handle URI:
http://hdl.handle.net/10754/564266
Title:
Innovative preparation of Au/C by replication of gold-containing mesoporous silica catalysts
Authors:
Kerdi, Fatmé; Caps, Valerie; Tuel, Alain
Abstract:
A new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. 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. © 2010 Elsevier B.V. All rights reserved.
KAUST Department:
KAUST Catalysis Center (KCC)
Publisher:
Elsevier BV
Journal:
Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010
Conference/Event name:
10th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts
Issue Date:
2010
DOI:
10.1016/S0167-2991(10)75028-X
Type:
Conference Paper
ISSN:
01672991
ISBN:
9780444536013
Appears in Collections:
Conference Papers; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorKerdi, Fatméen
dc.contributor.authorCaps, Valerieen
dc.contributor.authorTuel, Alainen
dc.date.accessioned2015-08-04T06:21:20Zen
dc.date.available2015-08-04T06:21:20Zen
dc.date.issued2010en
dc.identifier.isbn9780444536013en
dc.identifier.issn01672991en
dc.identifier.doi10.1016/S0167-2991(10)75028-Xen
dc.identifier.urihttp://hdl.handle.net/10754/564266en
dc.description.abstractA new strategy, based on the nanocasting concept, has been used to prepare gold nanoparticles (NPs) highly dispersed in meso-structured carbons. Gold is first introduced in various functionalized mesostructured silicas (MCM-48 and SBA-15) and particles are formed inside the porosity upon reduction of Au 3+ cations. Silica pores are then impregnated with a carbon precursor and the composite material is heated at 900°C under vacuum. 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. © 2010 Elsevier B.V. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectAerobic oxidationen
dc.subjectCatalysisen
dc.subjectGold nanoparticlesen
dc.subjectMesostructured carbonen
dc.titleInnovative preparation of Au/C by replication of gold-containing mesoporous silica catalystsen
dc.typeConference Paperen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.identifier.journalScientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010en
dc.conference.date11 July 2010 through 15 July 2010en
dc.conference.name10th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalystsen
dc.conference.locationLouvain-la-Neuveen
dc.contributor.institutionIRCELYON, UMR 5256 CNRS-Université de Lyon, 2 avenue A. Einstein, 69626 Villeurbanne Cedex, Franceen
kaust.authorCaps, Valerieen
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