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dc.contributor.author
Collins, Sebastián Enrique
dc.contributor.author
Baltanas, Miguel Angel
dc.contributor.author
Bonivardi, Adrian Lionel
dc.date.available
2017-10-19T18:20:00Z
dc.date.issued
2004-07
dc.identifier.citation
Collins, Sebastián Enrique; Baltanas, Miguel Angel; Bonivardi, Adrian Lionel; An infrared study of the intermediates of methanol synthesis from carbon dioxide over Pd/β-Ga2O3; Elsevier Inc; Journal of Catalysis; 226; 2; 7-2004; 410-421
dc.identifier.issn
0021-9517
dc.identifier.uri
http://hdl.handle.net/11336/26827
dc.description.abstract
The interaction of CO2 and H2/CO2 with pure ß-Ga2O3 and Pd/ß-Ga2O3 (1 wt% Pd) was studied by temperature-programmed reaction, between 323 K and 723 K at 0.1 MPa, using in situ FTIR spectroscopy. Under CO2(g), bicarbonate, bidentate, and polydentate carbonate species are formed over the surface of gallia at 323 K. When ß-Ga2O3 is exposed to H2/CO2 only polydentate carbonate reacts with hydrogen, atT >473 K (i.e., after the dissociative adsorption of H2 on gallia), to give bidentate and monodentate formate species (b-HCOO and m-HCOO, respectively) which are further hydrogenated to methoxy groups, just over 523 K. It is proposed that the addition of Pd to the oxide support only increases the hydrogenation rate of all the carbon-containing species bonded to the ß-Ga2O3 surface, by spillover of atomic H from metallic Pd to gallia: (i) at 323 K (bi)carbonate groups are hydrogenated to m-HCOO and b-HCOO, and (ii) from 423 K upwards m-HCOO is further transformed to methoxy. A strong evidence of the interconversion between m-HCOO and b-HCOO was also found.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
An infrared study of the intermediates of methanol synthesis from carbon dioxide over Pd/β-Ga2O3
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-10-17T14:10:25Z
dc.journal.volume
226
dc.journal.number
2
dc.journal.pagination
410-421
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Baltanas, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title
Journal of Catalysis
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcat.2004.06.012
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021951704003008
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