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dc.contributor.author
Piqueras, Cristian Martin
dc.contributor.author
Gutierrez, Victoria Soledad
dc.contributor.author
Vega, Daniel Alberto
dc.contributor.author
Volpe, María Alicia
dc.date.available
2015-09-23T17:26:57Z
dc.date.issued
2013-10-02
dc.identifier.citation
Piqueras, Cristian Martin; Gutierrez, Victoria Soledad; Vega, Daniel Alberto; Volpe, María Alicia; Selective hydrogenation of cinnamaldehyde in supercritical CO2 over Pt/SiO2 and Pt/HS-CeO2: An insight about the role of carbonyl interaction with supercritical CO2 or with ceria support sites in cinamyl alcohol selectivity; Elsevier Science; Applied Catalysis A: General; 467; 2-10-2013; 253-260
dc.identifier.issn
0926-860X
dc.identifier.uri
http://hdl.handle.net/11336/2054
dc.description.abstract
The catalytic hydrogenation of cinnamaldehyde employing H2 as the reductant was carried out under supercritical (sc) CO2, propane and other CO2 dense mixture, employing Pt supported on silica and high surface (HS) ceria. The phase behavior of the mixtures was found to be in good agreement with the predictions obtained from the MHV2 (modified Huron-Vidal second-order) model. In order to study the influence of scCO2 on the selectivity, the reaction was also conducted in dense propane and near-critical CO2–isopropanol mixtures. These results were compared with those corresponding to classical gas–liquid conditions with isopropanol as solvent and low H2 pressure. In scCO2, the selectivity to cinnamyl alcohol over Pt/SiO2 was 91%, quite higher than under classical conditions (38%). Such an enhancement is originated by the interaction of the Cdouble bond; length as m-dashO with scCO2. For Pt/HS-CeO2 the selectivity under supercritical conditions was slightly lower (80%) than the one corresponding to Pt/SiO2 but quite higher than the one corresponding to gas–liquid conditions (54%). The interaction of the carbonyl group with ceria support predominates in this case, thus, the beneficial effect of scCO2 is not observed in the same magnitude as in the case of Pt/SiO2. A catalytic scenario is drawn for each catalyst in order to explain the different selectivity patterns.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
CERIA
dc.subject
CINNAMALDEHYDE
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SELECTIVE HYDROGENATION
dc.subject
SUPERCRITICAL CARBON DIOXIDE
dc.subject.classification
Ingeniería de Procesos Químicos
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Selective hydrogenation of cinnamaldehyde in supercritical CO2 over Pt/SiO2 and Pt/HS-CeO2: An insight about the role of carbonyl interaction with supercritical CO2 or with ceria support sites in cinamyl alcohol selectivity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
467
dc.journal.pagination
253-260
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Piqueras, Cristian Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Planta Piloto de Ingeniería Química (i); Argentina
dc.description.fil
Fil: Gutierrez, Victoria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Planta Piloto de Ingeniería Química (i); Argentina
dc.description.fil
Fil: Vega, Daniel Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Instituto de Física del Sur; Argentina
dc.description.fil
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Bahía Blanca. Planta Piloto de Ingeniería Química (i); Argentina
dc.journal.title
Applied Catalysis A: General
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.apcata.2013.07.028
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926860X13004262
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