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dc.contributor.author
Torresi, Pablo Antonio
dc.contributor.author
Diez, Veronica Karina
dc.contributor.author
Luggren, Pablo Jorge
dc.contributor.author
Di Cosimo, Juana Isabel
dc.date.available
2017-12-20T15:53:23Z
dc.date.issued
2014-06
dc.identifier.citation
Torresi, Pablo Antonio; Diez, Veronica Karina; Luggren, Pablo Jorge; Di Cosimo, Juana Isabel; Upgrading of diols by gas-phase dehydrogenation and dehydration reactions on bifunctional Cu-based oxides; Royal Society of Chemistry; Catalysys Science and Technology; 4; 9; 6-2014; 3203-3213
dc.identifier.issn
2044-4761
dc.identifier.uri
http://hdl.handle.net/11336/31112
dc.description.abstract
Biomass-derived short chain polyols can be transformed in valuable oxygenates used as building blocks. The gas phase conversion of a model molecule of 1,3-diols (1,3-butanediol) was studied on bifunctional Cu-Mg, Cu-Al and Cu-Mg-Al mixed oxide catalysts that combine surface Cu0 particles and acid-base properties. A series of ZCuMgAl catalysts (Z=0.3-61.2 wt.% Cu, Mg/Al=1.5 molar ratio) was prepared by coprecipitation and thoroughly characterized by several techniques such as BET surface area, TPR-N2O chemisorption, XRD and TPD of CO2. The ZCuMgAl catalysts promote the upgrading of the diol by a series of dehydrogenation and/or dehydration reactions proceeding at reaction rates that depend on the copper content (Z). The overall activity increases linearly with the amount of surface Cu0 species thereby confirming participation of metallic sites in rate-limiting steps. Besides, surface Cu0 sites favor the reaction pathway toward 1,3-butanediol dehydrogenation. Thus, the dehydrogenation/dehydration selectivity ratio increases with Z as a result of the enhanced amount of exposed Cu0 particles. ZCuMgAl catalysts with Z < 8wt.% dehydrogenate-dehydrate-hydrogenate the diol at low rates giving mainly C4 ketones and break the intermediates forming C1-C3 oxygenates; catalysts with Z > 8wt.% are more active and yield valuable multifunctional C4 oxygenates such as hydroxyketones and to a lesser extent, unsaturated alcohols and ketones. A strongly basic Cu-Mg catalyst promotes the C-C bond cleavage reaction giving short carbon chain oxygenates at low rates; an acidic Cu-Al catalyst converts the diol into the C4 saturated ketone and olefins.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Dehydration
dc.subject
Dehydrogenation
dc.subject
Diols
dc.subject
Acid-Base Catalyst
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Copper
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Upgrading of diols by gas-phase dehydrogenation and dehydration reactions on bifunctional Cu-based oxides
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-18T15:10:52Z
dc.journal.volume
4
dc.journal.number
9
dc.journal.pagination
3203-3213
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Torresi, Pablo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Diez, Veronica Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Luggren, Pablo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Di Cosimo, Juana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.journal.title
Catalysys Science and Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/C4CY00639A
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2014/cy/c4cy00639a/unauth#!divAbstract
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