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dc.contributor.author
Comelli, Raul Alberto
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dc.date.available
2018-03-19T21:05:59Z
dc.date.issued
2002-11
dc.identifier.citation
Comelli, Raul Alberto; Tungsten-Ferrierite Catalysts Prepared by Impregnation and Ion-Exchange: Characterization and Activity During the Skeletal Isomerization of Linear Butenes; Springer; Catalysis Letters; 83; 3-4; 11-2002; 257-264
dc.identifier.issn
1011-372X
dc.identifier.uri
http://hdl.handle.net/11336/39282
dc.description.abstract
Tungsten-ferrierite catalysts were prepared by impregnation and ion-exchange. Potassium (KF), ammonium (AF), and protonic (HF) ferrierites were used as starting materials. Characterization of impregnated catalysts shows reduction peaks characteristic of tungsten species, whereas the absence of a peak in the corresponding profiles of the exchanged material indicates such species were incorporated into the framework. For impregnated materials, the tungsten species-surface interaction is not strong. Catalytic performance during the linear butene skeletal isomerization at 300 °C and at atmospheric pressure was measured. Exchanged materials reach both conversion and isobutene yield larger than the impregnated ones. Samples prepared from AF and HF practically display the same catalytic behavior at 5 min, being associated with the presence of strong acid sites. Tungsten-impregnated KF does not reach a high activity at a short time-on-stream (TOS), showing a particular by-product distribution related to the absence of strong acid sites. Even though exchanged samples starting from KF show the HF characteristic behavior, differences at 5 min appear. By-product distributions allow us to consider their formation from dimers and/or oligomers. At 5 min, the C5+ fraction is the main one, following propene, propane, and butane in similar proportions. Over the “clean” surface, propene could be involved in other reactions considering its high reactivity. At a long TOS, both the C5+ fraction and propane decrease, whereas propene increases, verifying the bimolecular mechanism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Tungsten-Ferrierite
dc.subject
Impregnation
dc.subject
Ion-Exchange
dc.subject
Skeletal Isomerization
dc.subject
Isobutene
dc.subject.classification
Otras Ingeniería Química
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Tungsten-Ferrierite Catalysts Prepared by Impregnation and Ion-Exchange: Characterization and Activity During the Skeletal Isomerization of Linear Butenes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-16T15:40:31Z
dc.identifier.eissn
1572-879X
dc.journal.volume
83
dc.journal.number
3-4
dc.journal.pagination
257-264
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Comelli, Raul Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.journal.title
Catalysis Letters
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1023/A:1021046300319
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1023%2FA%3A1021046300319
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