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dc.contributor.author
Vilella, Irene María Julieta
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dc.contributor.author
de Miguel, Sergio Ruben
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dc.contributor.author
Scelza, Osvaldo Antonio
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dc.date.available
2018-11-26T22:41:36Z
dc.date.issued
2008-04
dc.identifier.citation
Vilella, Irene María Julieta; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Pt, PtSn and PtGe catalysts supported on granular carbon for fine chemistry hydrogenation reactions; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 284; 1-2; 4-2008; 161-171
dc.identifier.issn
1381-1169
dc.identifier.uri
http://hdl.handle.net/11336/65249
dc.description.abstract
Two series of PtSn and PtGe catalysts with different metallic loadings, supported on activated carbon powder, were prepared by successive impregnation. Both the effects of the second metal addition and the Sn or Ge loading on the activity and selectivity in the carvone and the citral hydrogenations (used as catalytic tests) were investigated. In all cases the support was purified to eliminate undesirable elements such as sulfur and, for high Pt loadings, carbon was functionalized with nitric acid so as to introduce more oxygen-containing groups. The carvone hydrogenation was carried out with PtSn catalysts, the Pt and Sn loadings being very low. The citral hydrogenation was carried out with PtSn and PtGe catalysts with higher metal loadings supported on both purified, and purified and functionalized carbons. Besides, the effect of the branched solvent in the activity and selectivity of the citral hydrogenation reaction was also studied with PtSn catalysts. The catalysts were characterized by temperature-programmed reaction (TPR), test reactions of the metallic phase (cyclohexane dehydrogenation and cyclopentane hydrogenolysis), hydrogen chemisorption and by X-ray photoelectron spectroscopy (XPS). The catalytic activity in the carvone hydrogenation showed a maximum for the monometallic catalyst with respect to the Sn loading. For the catalyst with the highest tin loading (0.4 wt%) even though the activity drastically decreased, the selectivity to the doubled unsaturated alcohol (carveol) was very important. Although the citral hydrogenation gave very good results with PtSn systems with high metallic loadings, the opposite happened with the PtGe ones. Moreover, the more branched solvents modified the selectivity to unsaturated alcohols of the PtSn catalyst in the citral hydrogenation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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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
Activated Carbon Powder
dc.subject
Carvone Hydrogenation
dc.subject
Citral Hydrogenation
dc.subject
Ptge Catalysts
dc.subject
Ptsn
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
Pt, PtSn and PtGe catalysts supported on granular carbon for fine chemistry hydrogenation reactions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-11-15T15:59:09Z
dc.journal.volume
284
dc.journal.number
1-2
dc.journal.pagination
161-171
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Vilella, Irene María Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.description.fil
Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.description.fil
Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.journal.title
Journal of Molecular Catalysis A: Chemical
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.molcata.2008.01.017
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