Insights into the deactivation mechanism of supported tungsten hydride on alumina (W-H/Al2O3) catalyst for the direct conversion of ethylene to propylene

Handle URI:
http://hdl.handle.net/10754/563472
Title:
Insights into the deactivation mechanism of supported tungsten hydride on alumina (W-H/Al2O3) catalyst for the direct conversion of ethylene to propylene
Authors:
Mazoyer, Etienne; Szeto, Kaï Chung; Merle, Nicolas; Thivolle-Cazat, Jean; Boyron, Olivier; Basset, Jean-Marie ( 0000-0003-3166-8882 ) ; Nicholas, Christopher P.; Taoufik, Mostafa
Abstract:
Tungsten hydride supported on alumina prepared by the surface organometallic chemistry method is an active precursor for the direct conversion of ethylene to propylene at low temperature and pressure. An extensive contact time study revealed that the dimerization of ethylene to 1-butene is the primary and also the rate limiting step. The catalytic cycle further involves isomerization of 1-butene to 2-butene, followed by cross-metathesis of ethylene and 2-butene to yield propylene with high selectivity. The deactivation mechanism of this reaction has been investigated. The used catalyst was extensively examined by DRIFTS, solid-state NMR, EPR, UV-Vis, TGA and DSC techniques. It was found that a large amount of carbonaceous species, which were due to side reaction like olefin polymerization took place with time on stream, significantly hindering the dimerization of ethylene to 1-butene and therefore the production of propylene. Crown Copyright © 2014 Published by Elsevier B.V. All rights reserved.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Chemical Science Program
Publisher:
Elsevier BV
Journal:
Journal of Molecular Catalysis A: Chemical
Issue Date:
Apr-2014
DOI:
10.1016/j.molcata.2014.01.025
Type:
Article
ISSN:
13811169
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.authorMazoyer, Etienneen
dc.contributor.authorSzeto, Kaï Chungen
dc.contributor.authorMerle, Nicolasen
dc.contributor.authorThivolle-Cazat, Jeanen
dc.contributor.authorBoyron, Olivieren
dc.contributor.authorBasset, Jean-Marieen
dc.contributor.authorNicholas, Christopher P.en
dc.contributor.authorTaoufik, Mostafaen
dc.date.accessioned2015-08-03T11:52:20Zen
dc.date.available2015-08-03T11:52:20Zen
dc.date.issued2014-04en
dc.identifier.issn13811169en
dc.identifier.doi10.1016/j.molcata.2014.01.025en
dc.identifier.urihttp://hdl.handle.net/10754/563472en
dc.description.abstractTungsten hydride supported on alumina prepared by the surface organometallic chemistry method is an active precursor for the direct conversion of ethylene to propylene at low temperature and pressure. An extensive contact time study revealed that the dimerization of ethylene to 1-butene is the primary and also the rate limiting step. The catalytic cycle further involves isomerization of 1-butene to 2-butene, followed by cross-metathesis of ethylene and 2-butene to yield propylene with high selectivity. The deactivation mechanism of this reaction has been investigated. The used catalyst was extensively examined by DRIFTS, solid-state NMR, EPR, UV-Vis, TGA and DSC techniques. It was found that a large amount of carbonaceous species, which were due to side reaction like olefin polymerization took place with time on stream, significantly hindering the dimerization of ethylene to 1-butene and therefore the production of propylene. Crown Copyright © 2014 Published by Elsevier B.V. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectCatalyst deactivationen
dc.subjectHeterogeneous catalysisen
dc.subjectPolymerizationen
dc.subjectSolid state NMRen
dc.subjectTGA/DSCen
dc.titleInsights into the deactivation mechanism of supported tungsten hydride on alumina (W-H/Al2O3) catalyst for the direct conversion of ethylene to propyleneen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.identifier.journalJournal of Molecular Catalysis A: Chemicalen
dc.contributor.institutionUniversité Lyon 1, C2P2, ICL, 43 Bd du 11 Novembre 1918, 69616 Villeurbanne, Franceen
dc.contributor.institutionExploratory Catalysis Research, UOP LLC, A Honeywell Company, 25 East Algonquin Road, Des Plaines, IL 60017, United Statesen
kaust.authorBasset, Jean-Marieen
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