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dc.contributor.author
Pierini, Beatriz T.  
dc.contributor.author
Lombardo, Eduardo Agustin  
dc.date.available
2019-04-02T19:37:35Z  
dc.date.issued
2005-07  
dc.identifier.citation
Pierini, Beatriz T.; Lombardo, Eduardo Agustin; Structure and properties of Cr promoted VPO catalysts; Elsevier Science Sa; Materials Chemistry and Physics; 92; 1; 7-2005; 197-204  
dc.identifier.issn
0254-0584  
dc.identifier.uri
http://hdl.handle.net/11336/73017  
dc.description.abstract
In this work, VOHPO4·1/2H2O was synthesized from V2O5 and anhydrous H3PO4 in an alcohol mixture. The Cr(NO3)3 in varying proportions was either added during synthesis or impregnated on the dried vanadyl hydrogen phosphate. The solid features and the catalytic behavior of these formulations were affected by both the addition procedure and the Cr load. The effect of Cr upon the catalyst structure and the development of acid and redox sites were studied through XRD, TPR, LRS and FT-IR. Acetonitrile was used as a probe molecule to ascertain the Lewis acid strength of the surface sites present in all the VPO formulations. It is concluded that the impregnation of Cr is more effective to increase the concentration of very strong Lewis acid sites, while this method and co-precipitation are similarly effective in the generation of V5+/V4+ redox couples. Both types of sites in adequate balance are needed to optimize the catalytic behavior of VPO formulations.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science Sa  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Acidity  
dc.subject
Cr Promoter  
dc.subject
Maleic Anhydride  
dc.subject
Selective Oxidation  
dc.subject
Vpo Catalysts  
dc.subject.classification
Ingeniería Medioambiental y Geológica, Geotécnicas  
dc.subject.classification
Ingeniería del Medio Ambiente  
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Structure and properties of Cr promoted VPO catalysts  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-04-01T16:11:11Z  
dc.journal.volume
92  
dc.journal.number
1  
dc.journal.pagination
197-204  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Pierini, Beatriz T.. 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: Lombardo, Eduardo Agustin. 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
Materials Chemistry and Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.matchemphys.2005.01.009