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dc.contributor.author
Padro, Cristina
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dc.contributor.author
Apesteguia, Carlos Rodolfo
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dc.date.available
2018-08-16T12:39:02Z
dc.date.issued
2004-09
dc.identifier.citation
Padro, Cristina; Apesteguia, Carlos Rodolfo; Gas-phase synthesis of hydroxyacetophenones by acylation of phenol with acetic acid; Elsevier Science; Journal of Catalysis; 226; 2; 9-2004; 308-320
dc.identifier.issn
0021-9517
dc.identifier.uri
http://hdl.handle.net/11336/55821
dc.description.abstract
The gas-phase synthesis of aromatic ketones via acylation of phenol with acetic acid was studied on SiO2–Al2O3, Al-MCM-41, zeolites HY and ZSM5, and tungstophosphoric acid (HPA) supported on MCM-41 and carbon. At contact times of 146 g h/mol, the initial conversion of phenol varied between 12.5% (HY) and 19.1% (HPA/MCM-41), and the initial selectivity to ortho-hydroxyacetophenone (o-HAP) between 37.1% (HPA/C) and 69.1% (HY). In all the cases, the formation of o-HAP was clearly favored in comparison to that of para-isomer. Zeolites HY and ZSM5, which contained strong Brønsted and Lewis acid sites, produced efficiently o-HAP via both the direct C-acylation of phenol and the acylation of phenyl acetate intermediate formed from O-acylation of phenol. HPA-based catalysts contained only Brønsted acid sites and formed o-HAP exclusively as a secondary product from phenyl acetate. The o-HAP yield remained constant with time on stream on ZSM5 but drastically decreased on the other samples because of coke formation. The superior stability of zeolite ZSM5 was interpreted by considering that coke precursor formation is avoided into the microporous structure of this zeolite.
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
Aromatic Ketones
dc.subject
Acylation Reactions
dc.subject
Solid Acids
dc.subject
O-Hydroxyacetophenone Synthesis
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
Gas-phase synthesis of hydroxyacetophenones by acylation of phenol with acetic acid
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-13T18:14:56Z
dc.journal.volume
226
dc.journal.number
2
dc.journal.pagination
308-320
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Padro, Cristina. 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: Apesteguia, Carlos Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.journal.title
Journal of Catalysis
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcat.2004.05.030
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