Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes

Autores
Aguirre, María del Carmen; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Fierro, J. L. G; Reyes, Patricio
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of the preparation method of Co/TiO2 catalysts on the performance in the liquid phase hydrogenation of cinnamaldehyde and crotonaldehyde has been studied. The Co/TiO2 catalysts were prepared by impregnation on titania (TiO2, P-25), sol-gel, and precipitation procedures. Different reduction-oxidation-reduction cycles were carried out in order to detect possible changes in the nature of the phases and their reduction degrees. The catalysts were characterized by specific area measurements, TEM, ED, XPS and TPR/TPO studies. The catalysts prepared by the sol-gel and precipitation method exhibit higher resistance to sintering when they are treated under the same reduction-oxidation-reduction cycles, than the impregnated catalyst. Morphological changes observed by TEM were used to explain the catalytic behavior showed by the catalysts. The presence of Coº, CoO and Co3O4 phases in the reduced samples were detected by different methods. XPS results show the existence of small particles of CoO, which are interacting with the support, which are very difficult to reduce. TEM and electron diffraction structural studies show an effect of metalsupport interaction by the appearance of channels and pill-box form in the particles. The highest yield in both catalytic hydrogenation reactions were obtained with the Co/TiO2 catalysts prepared by precipitation and sol gel methods. The selectivity was closed to 50 and 30 % for cinnamyl alcohol and crotyl alcohol, respectively.
Fil: Aguirre, María del Carmen. Universidad de Concepción; Chile
Fil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Fierro, J. L. G. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
Fil: Reyes, Patricio. Universidad de Concepción; Chile
Materia
Co/TiO2 catalysts
hydrogenation
cinnamaldehyde
crotonaldehyde
characterisation,
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/56164
Acceder
id CONICETDig_b694ccc4060a727acea0bee06f94f39f
oai_identifier_str oai:ri.conicet.gov.ar:11336/56164
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydesAguirre, María del CarmenSantori, Gerardo FabianFerretti, Osmar AlbertoFierro, J. L. GReyes, PatricioCo/TiO2 catalystshydrogenationcinnamaldehydecrotonaldehydecharacterisation,https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The effect of the preparation method of Co/TiO2 catalysts on the performance in the liquid phase hydrogenation of cinnamaldehyde and crotonaldehyde has been studied. The Co/TiO2 catalysts were prepared by impregnation on titania (TiO2, P-25), sol-gel, and precipitation procedures. Different reduction-oxidation-reduction cycles were carried out in order to detect possible changes in the nature of the phases and their reduction degrees. The catalysts were characterized by specific area measurements, TEM, ED, XPS and TPR/TPO studies. The catalysts prepared by the sol-gel and precipitation method exhibit higher resistance to sintering when they are treated under the same reduction-oxidation-reduction cycles, than the impregnated catalyst. Morphological changes observed by TEM were used to explain the catalytic behavior showed by the catalysts. The presence of Coº, CoO and Co3O4 phases in the reduced samples were detected by different methods. XPS results show the existence of small particles of CoO, which are interacting with the support, which are very difficult to reduce. TEM and electron diffraction structural studies show an effect of metalsupport interaction by the appearance of channels and pill-box form in the particles. The highest yield in both catalytic hydrogenation reactions were obtained with the Co/TiO2 catalysts prepared by precipitation and sol gel methods. The selectivity was closed to 50 and 30 % for cinnamyl alcohol and crotyl alcohol, respectively.Fil: Aguirre, María del Carmen. Universidad de Concepción; ChileFil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Fierro, J. L. G. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; EspañaFil: Reyes, Patricio. Universidad de Concepción; ChileSociedad Chilena de Química2006-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/56164Aguirre, María del Carmen; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Fierro, J. L. G; Reyes, Patricio; Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes; Sociedad Chilena de Química; Journal of the Chilean Chemical Society; 51; 1; 3-2006; 791-7990717-9707CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000100008&lng=en&nrm=iso&tlng=eninfo:eu-repo/semantics/altIdentifier/doi/10.4067/S0717-97072006000100008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:13:59Zoai:ri.conicet.gov.ar:11336/56164instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:13:59.67CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
title Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
spellingShingle Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
Aguirre, María del Carmen
Co/TiO2 catalysts
hydrogenation
cinnamaldehyde
crotonaldehyde
characterisation,
title_short Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
title_full Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
title_fullStr Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
title_full_unstemmed Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
title_sort Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes
dc.creator.none.fl_str_mv Aguirre, María del Carmen
Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Fierro, J. L. G
Reyes, Patricio
author Aguirre, María del Carmen
author_facet Aguirre, María del Carmen
Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Fierro, J. L. G
Reyes, Patricio
author_role author
author2 Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Fierro, J. L. G
Reyes, Patricio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Co/TiO2 catalysts
hydrogenation
cinnamaldehyde
crotonaldehyde
characterisation,
topic Co/TiO2 catalysts
hydrogenation
cinnamaldehyde
crotonaldehyde
characterisation,
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The effect of the preparation method of Co/TiO2 catalysts on the performance in the liquid phase hydrogenation of cinnamaldehyde and crotonaldehyde has been studied. The Co/TiO2 catalysts were prepared by impregnation on titania (TiO2, P-25), sol-gel, and precipitation procedures. Different reduction-oxidation-reduction cycles were carried out in order to detect possible changes in the nature of the phases and their reduction degrees. The catalysts were characterized by specific area measurements, TEM, ED, XPS and TPR/TPO studies. The catalysts prepared by the sol-gel and precipitation method exhibit higher resistance to sintering when they are treated under the same reduction-oxidation-reduction cycles, than the impregnated catalyst. Morphological changes observed by TEM were used to explain the catalytic behavior showed by the catalysts. The presence of Coº, CoO and Co3O4 phases in the reduced samples were detected by different methods. XPS results show the existence of small particles of CoO, which are interacting with the support, which are very difficult to reduce. TEM and electron diffraction structural studies show an effect of metalsupport interaction by the appearance of channels and pill-box form in the particles. The highest yield in both catalytic hydrogenation reactions were obtained with the Co/TiO2 catalysts prepared by precipitation and sol gel methods. The selectivity was closed to 50 and 30 % for cinnamyl alcohol and crotyl alcohol, respectively.
Fil: Aguirre, María del Carmen. Universidad de Concepción; Chile
Fil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Fierro, J. L. G. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
Fil: Reyes, Patricio. Universidad de Concepción; Chile
description The effect of the preparation method of Co/TiO2 catalysts on the performance in the liquid phase hydrogenation of cinnamaldehyde and crotonaldehyde has been studied. The Co/TiO2 catalysts were prepared by impregnation on titania (TiO2, P-25), sol-gel, and precipitation procedures. Different reduction-oxidation-reduction cycles were carried out in order to detect possible changes in the nature of the phases and their reduction degrees. The catalysts were characterized by specific area measurements, TEM, ED, XPS and TPR/TPO studies. The catalysts prepared by the sol-gel and precipitation method exhibit higher resistance to sintering when they are treated under the same reduction-oxidation-reduction cycles, than the impregnated catalyst. Morphological changes observed by TEM were used to explain the catalytic behavior showed by the catalysts. The presence of Coº, CoO and Co3O4 phases in the reduced samples were detected by different methods. XPS results show the existence of small particles of CoO, which are interacting with the support, which are very difficult to reduce. TEM and electron diffraction structural studies show an effect of metalsupport interaction by the appearance of channels and pill-box form in the particles. The highest yield in both catalytic hydrogenation reactions were obtained with the Co/TiO2 catalysts prepared by precipitation and sol gel methods. The selectivity was closed to 50 and 30 % for cinnamyl alcohol and crotyl alcohol, respectively.
publishDate 2006
dc.date.none.fl_str_mv 2006-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/56164
Aguirre, María del Carmen; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Fierro, J. L. G; Reyes, Patricio; Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes; Sociedad Chilena de Química; Journal of the Chilean Chemical Society; 51; 1; 3-2006; 791-799
0717-9707
CONICET Digital
CONICET
url http://hdl.handle.net/11336/56164
identifier_str_mv Aguirre, María del Carmen; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Fierro, J. L. G; Reyes, Patricio; Morphological and structural features of Co/TiO2 catalysts prepared by different methods and their performance in the liquid phase hydrogenation of α, β unsaturated aldehydes; Sociedad Chilena de Química; Journal of the Chilean Chemical Society; 51; 1; 3-2006; 791-799
0717-9707
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000100008&lng=en&nrm=iso&tlng=en
info:eu-repo/semantics/altIdentifier/doi/10.4067/S0717-97072006000100008
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sociedad Chilena de Química
publisher.none.fl_str_mv Sociedad Chilena de Química
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846781555015417856
score 12.982451

Publicaciones similares