One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance
[EN] We report on a study of the key reaction parameters in glycerol oxidehydration into acrylic acid over W-V-Nb mixed oxides with a hexagonal tungsten bronze structure. This investigation demonstrated that the optimal control of the two consecutive steps of acid-catalysed glycerol dehydration into...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/134138 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/134138 |
| Access Level: | acceso abierto |
| Palabra clave: | Glycerol Acrylic acid Oxidehydration W-V-Nb mixed oxides Hexagonal tungsten bronze |
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One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performanceChieregato, AlessandroBasile, FrancescoLiosi, GiuseppeZamora Blanco, SegundoCavani, FabrizioSoriano Rodríguez, Mª Dolores|||0000-0002-1799-895XConcepción Heydorn, Patricia|||0000-0003-2058-3103López Nieto, José Manuel|||0000-0002-6960-3219GlycerolAcrylic acidOxidehydrationW-V-Nb mixed oxidesHexagonal tungsten bronze[EN] We report on a study of the key reaction parameters in glycerol oxidehydration into acrylic acid over W-V-Nb mixed oxides with a hexagonal tungsten bronze structure. This investigation demonstrated that the optimal control of the two consecutive steps of acid-catalysed glycerol dehydration into acrolein and aldehyde oxidation into acrylic acid, and of the parallel reaction of acrolein transformation into by-products (ketals and oligomers), was achieved in the presence of a defined glycerol-to-oxygen inlet ratio. Indeed, oxygen played the fundamental role of accelerating the oxidation of the intermediately formed acrolein into acrylic acid, by allowing a greater concentration of the oxidizing V5+ sites. In fact, an unprecedented higher yield to acrylic acid and acrolein compared to W-V bronzes was registered (maximum acrylic acid yield 50.5%) together with an increase of more than one order of magnitude in productivity, because of both the greater concentration of glycerol used in the inlet feed and the lower contact time needed. Further experiments were carried out by reacting acrolein and methanol in oxidative conditions, the latter as a model molecule for the determination of surface acid and redox properties.CIRI (Centro per la Ricerca Industriale), Università di Bologna, is acknowledged for the grant to A.C.The Valencia group also thanks the financial support of Dirección General de Investigación Científica y Técnica in Spain (Project CTQ2012-37925-C03-01).ElsevierInstituto Universitario Mixto de Tecnología QuímicaUniversità di BolognaMinisterio de Economía y CompetitividadRepositorio Institucional de la Universitat Politècnica de València Riunet20142014-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/134138reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2012-37925-C03-01 CATALIZADORES PARA LA ENERGIA Y EL MEDIOAMBIENTE: ACTIVACION SELECTIVA DE ENLACES S-H Y C-Hopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1341382026-06-13T07:49:27Z |
| dc.title.none.fl_str_mv |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| title |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| spellingShingle |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance Chieregato, Alessandro Glycerol Acrylic acid Oxidehydration W-V-Nb mixed oxides Hexagonal tungsten bronze |
| title_short |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| title_full |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| title_fullStr |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| title_full_unstemmed |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| title_sort |
One-pot glycerol oxydehydration on multifunctional catalysts: influence of acid and redox properties on the catalytic performance |
| dc.creator.none.fl_str_mv |
Chieregato, Alessandro Basile, Francesco Liosi, Giuseppe Zamora Blanco, Segundo Cavani, Fabrizio Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X Concepción Heydorn, Patricia|||0000-0003-2058-3103 López Nieto, José Manuel|||0000-0002-6960-3219 |
| author |
Chieregato, Alessandro |
| author_facet |
Chieregato, Alessandro Basile, Francesco Liosi, Giuseppe Zamora Blanco, Segundo Cavani, Fabrizio Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X Concepción Heydorn, Patricia|||0000-0003-2058-3103 López Nieto, José Manuel|||0000-0002-6960-3219 |
| author_role |
author |
| author2 |
Basile, Francesco Liosi, Giuseppe Zamora Blanco, Segundo Cavani, Fabrizio Soriano Rodríguez, Mª Dolores|||0000-0002-1799-895X Concepción Heydorn, Patricia|||0000-0003-2058-3103 López Nieto, José Manuel|||0000-0002-6960-3219 |
| author2_role |
author author author author author author author |
| dc.contributor.none.fl_str_mv |
Instituto Universitario Mixto de Tecnología Química Università di Bologna Ministerio de Economía y Competitividad Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Glycerol Acrylic acid Oxidehydration W-V-Nb mixed oxides Hexagonal tungsten bronze |
| topic |
Glycerol Acrylic acid Oxidehydration W-V-Nb mixed oxides Hexagonal tungsten bronze |
| description |
[EN] We report on a study of the key reaction parameters in glycerol oxidehydration into acrylic acid over W-V-Nb mixed oxides with a hexagonal tungsten bronze structure. This investigation demonstrated that the optimal control of the two consecutive steps of acid-catalysed glycerol dehydration into acrolein and aldehyde oxidation into acrylic acid, and of the parallel reaction of acrolein transformation into by-products (ketals and oligomers), was achieved in the presence of a defined glycerol-to-oxygen inlet ratio. Indeed, oxygen played the fundamental role of accelerating the oxidation of the intermediately formed acrolein into acrylic acid, by allowing a greater concentration of the oxidizing V5+ sites. In fact, an unprecedented higher yield to acrylic acid and acrolein compared to W-V bronzes was registered (maximum acrylic acid yield 50.5%) together with an increase of more than one order of magnitude in productivity, because of both the greater concentration of glycerol used in the inlet feed and the lower contact time needed. Further experiments were carried out by reacting acrolein and methanol in oxidative conditions, the latter as a model molecule for the determination of surface acid and redox properties. |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014 2014-01-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://riunet.upv.es/handle/10251/134138 |
| url |
https://riunet.upv.es/handle/10251/134138 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 CTQ2012-37925-C03-01 CATALIZADORES PARA LA ENERGIA Y EL MEDIOAMBIENTE: ACTIVACION SELECTIVA DE ENLACES S-H Y C-H |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reconocimiento (by) http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Reconocimiento (by) http://creativecommons.org/licenses/by/4.0/ |
| eu_rights_str_mv |
openAccess |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname:Universitat Politècnica de València (UPV) |
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Universitat Politècnica de València (UPV) |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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