Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method
- Autores
- Villagran Olivares, Alejandra Catalina; Barroso, Mariana Noelia; Abello, Maria Cristina
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- MgAl2O4 spinel employed as support of reforming catalysts was doped by CeO2. The samples were prepared by wet impregnation from aqueous solutions of cerium nitrate, with and without chelating agents. The chelating agents used were ethylenediamine-tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and citric acid (CA) at different pH of impregnation. The solids were characterized by TG, XRD, SBET, TPR, SEM-EDX and CO2−TPD. Nanoparticles of CeO2 between 5 and 6.8 nm were obtained by the thermal decomposition in air at 600 °C. The surface cerium reduction occurred in a wide temperature range of 450° to 670 °C. The use of citric acid at pH= 8 led to the lowest crystallite size of CeO2 and the lowest interaction with the spinel. The H2 consumption and extent of CeO2-support interaction did not show a clear dependence with the CeO2 crystallite sizes. The use of chelating agents in the impregnation step did not modify the total basicity. Slight changes in the strength of weak basic sites were observed.
Fil: Villagran Olivares, Alejandra Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Barroso, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Fil: Abello, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina - Materia
-
CEO2-MGAL2O4
CERIA IMPREGNATION
CHELATING AGENTS
CHEMICAL SYNTHESIS
SURFACE PROPERTIES - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/88092
Ver los metadatos del registro completo
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spelling |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation methodVillagran Olivares, Alejandra CatalinaBarroso, Mariana NoeliaAbello, Maria CristinaCEO2-MGAL2O4CERIA IMPREGNATIONCHELATING AGENTSCHEMICAL SYNTHESISSURFACE PROPERTIEShttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2MgAl2O4 spinel employed as support of reforming catalysts was doped by CeO2. The samples were prepared by wet impregnation from aqueous solutions of cerium nitrate, with and without chelating agents. The chelating agents used were ethylenediamine-tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and citric acid (CA) at different pH of impregnation. The solids were characterized by TG, XRD, SBET, TPR, SEM-EDX and CO2−TPD. Nanoparticles of CeO2 between 5 and 6.8 nm were obtained by the thermal decomposition in air at 600 °C. The surface cerium reduction occurred in a wide temperature range of 450° to 670 °C. The use of citric acid at pH= 8 led to the lowest crystallite size of CeO2 and the lowest interaction with the spinel. The H2 consumption and extent of CeO2-support interaction did not show a clear dependence with the CeO2 crystallite sizes. The use of chelating agents in the impregnation step did not modify the total basicity. Slight changes in the strength of weak basic sites were observed.Fil: Villagran Olivares, Alejandra Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Barroso, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaFil: Abello, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaSociedade Brasileira de Química2018-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88092Villagran Olivares, Alejandra Catalina; Barroso, Mariana Noelia; Abello, Maria Cristina; Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method; Sociedade Brasileira de Química; Química Nova; 41; 8; 8-2018; 899-9040100-40421678-7064CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.21577/0100-4042.20170265info:eu-repo/semantics/altIdentifier/url/http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000800899info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:33:33Zoai:ri.conicet.gov.ar:11336/88092instacron: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:34982025-09-29 10:33:33.742CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
title |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
spellingShingle |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method Villagran Olivares, Alejandra Catalina CEO2-MGAL2O4 CERIA IMPREGNATION CHELATING AGENTS CHEMICAL SYNTHESIS SURFACE PROPERTIES |
title_short |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
title_full |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
title_fullStr |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
title_full_unstemmed |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
title_sort |
Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method |
dc.creator.none.fl_str_mv |
Villagran Olivares, Alejandra Catalina Barroso, Mariana Noelia Abello, Maria Cristina |
author |
Villagran Olivares, Alejandra Catalina |
author_facet |
Villagran Olivares, Alejandra Catalina Barroso, Mariana Noelia Abello, Maria Cristina |
author_role |
author |
author2 |
Barroso, Mariana Noelia Abello, Maria Cristina |
author2_role |
author author |
dc.subject.none.fl_str_mv |
CEO2-MGAL2O4 CERIA IMPREGNATION CHELATING AGENTS CHEMICAL SYNTHESIS SURFACE PROPERTIES |
topic |
CEO2-MGAL2O4 CERIA IMPREGNATION CHELATING AGENTS CHEMICAL SYNTHESIS SURFACE PROPERTIES |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
MgAl2O4 spinel employed as support of reforming catalysts was doped by CeO2. The samples were prepared by wet impregnation from aqueous solutions of cerium nitrate, with and without chelating agents. The chelating agents used were ethylenediamine-tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and citric acid (CA) at different pH of impregnation. The solids were characterized by TG, XRD, SBET, TPR, SEM-EDX and CO2−TPD. Nanoparticles of CeO2 between 5 and 6.8 nm were obtained by the thermal decomposition in air at 600 °C. The surface cerium reduction occurred in a wide temperature range of 450° to 670 °C. The use of citric acid at pH= 8 led to the lowest crystallite size of CeO2 and the lowest interaction with the spinel. The H2 consumption and extent of CeO2-support interaction did not show a clear dependence with the CeO2 crystallite sizes. The use of chelating agents in the impregnation step did not modify the total basicity. Slight changes in the strength of weak basic sites were observed. Fil: Villagran Olivares, Alejandra Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina Fil: Barroso, Mariana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina Fil: Abello, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina |
description |
MgAl2O4 spinel employed as support of reforming catalysts was doped by CeO2. The samples were prepared by wet impregnation from aqueous solutions of cerium nitrate, with and without chelating agents. The chelating agents used were ethylenediamine-tetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and citric acid (CA) at different pH of impregnation. The solids were characterized by TG, XRD, SBET, TPR, SEM-EDX and CO2−TPD. Nanoparticles of CeO2 between 5 and 6.8 nm were obtained by the thermal decomposition in air at 600 °C. The surface cerium reduction occurred in a wide temperature range of 450° to 670 °C. The use of citric acid at pH= 8 led to the lowest crystallite size of CeO2 and the lowest interaction with the spinel. The H2 consumption and extent of CeO2-support interaction did not show a clear dependence with the CeO2 crystallite sizes. The use of chelating agents in the impregnation step did not modify the total basicity. Slight changes in the strength of weak basic sites were observed. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08 |
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/11336/88092 Villagran Olivares, Alejandra Catalina; Barroso, Mariana Noelia; Abello, Maria Cristina; Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method; Sociedade Brasileira de Química; Química Nova; 41; 8; 8-2018; 899-904 0100-4042 1678-7064 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/88092 |
identifier_str_mv |
Villagran Olivares, Alejandra Catalina; Barroso, Mariana Noelia; Abello, Maria Cristina; Characterization of CeO2 doped MgAl2O4 prepared by the chelating agents-assisted impregnation method; Sociedade Brasileira de Química; Química Nova; 41; 8; 8-2018; 899-904 0100-4042 1678-7064 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.21577/0100-4042.20170265 info:eu-repo/semantics/altIdentifier/url/http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000800899 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira 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 |
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1844614350924414976 |
score |
13.070432 |