Poisoning Experiments Aimed at Discriminating Active and Less-Active Sites of Silica-Supported Tantalum Hydride for Alkane Metathesis

Handle URI:
http://hdl.handle.net/10754/561629
Title:
Poisoning Experiments Aimed at Discriminating Active and Less-Active Sites of Silica-Supported Tantalum Hydride for Alkane Metathesis
Authors:
Saggio, Guillaume; Taoufik, Mostafa; Basset, Jean-Marie ( 0000-0003-3166-8882 ) ; Thivolle-Cazat, Jean
Abstract:
Only 50% of the silica-supported tantalum hydride sites are active in the metathesis of propane. Indeed, more than 45% of the tantalum hydride can be eliminated by a selective oxygen poisoning of inactive sites with no significant decrease in the global turnover. Conversely, cyclopentane induces no such selective poisoning. Hence, the active tantalum hydride sites that show greater resistance to oxygen poisoning correspond to the νTa-H bands of higher wavenumbers, particularly that at 1860cm-1. These active tantalum hydride sites should correspond to tris- or monohydride species relatively far from silica surface oxygen atoms. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Chemical Science Program
Publisher:
Wiley-Blackwell
Journal:
ChemCatChem
Issue Date:
4-Oct-2010
DOI:
10.1002/cctc.201000199
Type:
Article
ISSN:
18673880
Sponsors:
The authors thank the CNRS, ESCPE-Lyon and the BP Company for financial support.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSaggio, Guillaumeen
dc.contributor.authorTaoufik, Mostafaen
dc.contributor.authorBasset, Jean-Marieen
dc.contributor.authorThivolle-Cazat, Jeanen
dc.date.accessioned2015-08-03T09:00:48Zen
dc.date.available2015-08-03T09:00:48Zen
dc.date.issued2010-10-04en
dc.identifier.issn18673880en
dc.identifier.doi10.1002/cctc.201000199en
dc.identifier.urihttp://hdl.handle.net/10754/561629en
dc.description.abstractOnly 50% of the silica-supported tantalum hydride sites are active in the metathesis of propane. Indeed, more than 45% of the tantalum hydride can be eliminated by a selective oxygen poisoning of inactive sites with no significant decrease in the global turnover. Conversely, cyclopentane induces no such selective poisoning. Hence, the active tantalum hydride sites that show greater resistance to oxygen poisoning correspond to the νTa-H bands of higher wavenumbers, particularly that at 1860cm-1. These active tantalum hydride sites should correspond to tris- or monohydride species relatively far from silica surface oxygen atoms. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThe authors thank the CNRS, ESCPE-Lyon and the BP Company for financial support.en
dc.publisherWiley-Blackwellen
dc.subjectAlkanesen
dc.subjectCatalyst poisoningen
dc.subjectHeterogeneous catalysisen
dc.subjectMetathesisen
dc.subjectTantalumen
dc.titlePoisoning Experiments Aimed at Discriminating Active and Less-Active Sites of Silica-Supported Tantalum Hydride for Alkane Metathesisen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.identifier.journalChemCatChemen
dc.contributor.institutionUniversité de Lyon 1, Institut de Chimie de Lyon, CPE Lyonen
dc.contributor.institutionCNRS, UMR 5265 C2P2, LCOMSen
dc.contributor.institutionBâtiment 308F, 43 Blvd du 11 F-69616, Villeurbanne Cedex, Franceen
kaust.authorBasset, Jean-Marieen
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