Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction

Autores
Castro, Cinthia S.; Ferretti, Cristián Alejandro; Di Cosimo, Juana Isabel; Mansur Assaf, José
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Solid catalysts comprising Li-based oxides were prepared by LiNO3 impregnation onto supports with different acid/base properties (SiO2, MgO, Al2O3 and Mg(Al)O mixed oxide obtained from hydrotalcite). The materials were characterized by means of XRD, N2 physisorption, ICP?OES, FEG-SEM and TPD of CO2. The oxide reactivities were evaluated using the model transesterification reaction between methyl acetate and ethanol under mild reaction conditions (313 K, ethanol/methyl acetate molar ratio = 6/1 and 0.2 wt.% of catalyst). Lithium impregnation onto silica and c-alumina yielded inactive catalysts for transesterification. On the other hand, the lithium addition onto MgO produced an active catalyst and remarkably high conversions were obtained for Li/Mg(Al)O. The different supports used considerably affected the base site densities and base strengths of the Li-based catalysts. The base properties thus influenced the catalytic performance of the materials. Stability tests revealed the lithium leaching occurrence which resulted in some homogeneous contribution.
Fil: Castro, Cinthia S.. Universidade Federal do Sao Carlos; Brasil
Fil: Ferretti, Cristián Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); Argentina
Fil: Di Cosimo, Juana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); Argentina
Fil: Mansur Assaf, José. Universidade Federal do Sao Carlos; Brasil
Materia
Mixed Oxides
Lithium-Based Catalysts
Heterogeneous Catalysis
Transesterification
Biodiesel
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:11336/21084
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21084
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reactionCastro, Cinthia S.Ferretti, Cristián AlejandroDi Cosimo, Juana IsabelMansur Assaf, JoséMixed OxidesLithium-Based CatalystsHeterogeneous CatalysisTransesterificationBiodieselhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Solid catalysts comprising Li-based oxides were prepared by LiNO3 impregnation onto supports with different acid/base properties (SiO2, MgO, Al2O3 and Mg(Al)O mixed oxide obtained from hydrotalcite). The materials were characterized by means of XRD, N2 physisorption, ICP?OES, FEG-SEM and TPD of CO2. The oxide reactivities were evaluated using the model transesterification reaction between methyl acetate and ethanol under mild reaction conditions (313 K, ethanol/methyl acetate molar ratio = 6/1 and 0.2 wt.% of catalyst). Lithium impregnation onto silica and c-alumina yielded inactive catalysts for transesterification. On the other hand, the lithium addition onto MgO produced an active catalyst and remarkably high conversions were obtained for Li/Mg(Al)O. The different supports used considerably affected the base site densities and base strengths of the Li-based catalysts. The base properties thus influenced the catalytic performance of the materials. Stability tests revealed the lithium leaching occurrence which resulted in some homogeneous contribution.Fil: Castro, Cinthia S.. Universidade Federal do Sao Carlos; BrasilFil: Ferretti, Cristián Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); ArgentinaFil: Di Cosimo, Juana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); ArgentinaFil: Mansur Assaf, José. Universidade Federal do Sao Carlos; BrasilElsevier2013-01info: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/11336/21084Castro, Cinthia S.; Ferretti, Cristián Alejandro; Di Cosimo, Juana Isabel; Mansur Assaf, José; Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction; Elsevier; Fuel; 103; 1-2013; 632-6380016-2361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0016236112004929info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fuel.2012.06.072info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:49:08Zoai:ri.conicet.gov.ar:11336/21084instacron: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:34982025-11-05 09:49:09.174CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
title Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
spellingShingle Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
Castro, Cinthia S.
Mixed Oxides
Lithium-Based Catalysts
Heterogeneous Catalysis
Transesterification
Biodiesel
title_short Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
title_full Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
title_fullStr Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
title_full_unstemmed Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
title_sort Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction
dc.creator.none.fl_str_mv Castro, Cinthia S.
Ferretti, Cristián Alejandro
Di Cosimo, Juana Isabel
Mansur Assaf, José
author Castro, Cinthia S.
author_facet Castro, Cinthia S.
Ferretti, Cristián Alejandro
Di Cosimo, Juana Isabel
Mansur Assaf, José
author_role author
author2 Ferretti, Cristián Alejandro
Di Cosimo, Juana Isabel
Mansur Assaf, José
author2_role author
author
author
dc.subject.none.fl_str_mv Mixed Oxides
Lithium-Based Catalysts
Heterogeneous Catalysis
Transesterification
Biodiesel
topic Mixed Oxides
Lithium-Based Catalysts
Heterogeneous Catalysis
Transesterification
Biodiesel
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Solid catalysts comprising Li-based oxides were prepared by LiNO3 impregnation onto supports with different acid/base properties (SiO2, MgO, Al2O3 and Mg(Al)O mixed oxide obtained from hydrotalcite). The materials were characterized by means of XRD, N2 physisorption, ICP?OES, FEG-SEM and TPD of CO2. The oxide reactivities were evaluated using the model transesterification reaction between methyl acetate and ethanol under mild reaction conditions (313 K, ethanol/methyl acetate molar ratio = 6/1 and 0.2 wt.% of catalyst). Lithium impregnation onto silica and c-alumina yielded inactive catalysts for transesterification. On the other hand, the lithium addition onto MgO produced an active catalyst and remarkably high conversions were obtained for Li/Mg(Al)O. The different supports used considerably affected the base site densities and base strengths of the Li-based catalysts. The base properties thus influenced the catalytic performance of the materials. Stability tests revealed the lithium leaching occurrence which resulted in some homogeneous contribution.
Fil: Castro, Cinthia S.. Universidade Federal do Sao Carlos; Brasil
Fil: Ferretti, Cristián Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); Argentina
Fil: Di Cosimo, Juana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Catalysis Science and Engineering Research Group (GICIC); Argentina
Fil: Mansur Assaf, José. Universidade Federal do Sao Carlos; Brasil
description Solid catalysts comprising Li-based oxides were prepared by LiNO3 impregnation onto supports with different acid/base properties (SiO2, MgO, Al2O3 and Mg(Al)O mixed oxide obtained from hydrotalcite). The materials were characterized by means of XRD, N2 physisorption, ICP?OES, FEG-SEM and TPD of CO2. The oxide reactivities were evaluated using the model transesterification reaction between methyl acetate and ethanol under mild reaction conditions (313 K, ethanol/methyl acetate molar ratio = 6/1 and 0.2 wt.% of catalyst). Lithium impregnation onto silica and c-alumina yielded inactive catalysts for transesterification. On the other hand, the lithium addition onto MgO produced an active catalyst and remarkably high conversions were obtained for Li/Mg(Al)O. The different supports used considerably affected the base site densities and base strengths of the Li-based catalysts. The base properties thus influenced the catalytic performance of the materials. Stability tests revealed the lithium leaching occurrence which resulted in some homogeneous contribution.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/21084
Castro, Cinthia S.; Ferretti, Cristián Alejandro; Di Cosimo, Juana Isabel; Mansur Assaf, José; Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction; Elsevier; Fuel; 103; 1-2013; 632-638
0016-2361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21084
identifier_str_mv Castro, Cinthia S.; Ferretti, Cristián Alejandro; Di Cosimo, Juana Isabel; Mansur Assaf, José; Support influence on the basicity promotion of lithium-based mixed oxides for transesterification reaction; Elsevier; Fuel; 103; 1-2013; 632-638
0016-2361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0016236112004929
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fuel.2012.06.072
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
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score 12.90159

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