Effects of rhodium and platinum on the reactivity of lanthanum phases
- Autores
- Irusta, S.; Cornaglia, Laura Maria; Lombardo, Eduardo Agustin
- Año de publicación
- 2004
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Rhodium and platinum catalysts were prepared by wet impregnation of Anedra lanthanum oxide. The polymorph forms of La2O2CO3 have also been prepared by an appropriate treatment of lanthanum compounds in carbon dioxide. The characterisation of the phases present in these solids was performed by XRD, FT-IR, LRS, TPD and TGA. One of the untreated supports (Aldrich) was La(OH)3, and the other (Anedra) consisted mainly of II-La2O2CO3 with traces of type Ia oxycarbonate and lanthanum hydroxide. Catalysts with a low rhodium loading showed an increase of Ia-La2O2CO3 already present on the support, whereas those with a low platinum loading would not modify the phases of the lanthanum solid. A different behaviour was observed in high metal loading catalysts. In this case, metals would catalyse the decomposition of type Ia polymorph and also prevent the hydration of the support. The treatment with CO2 provides additional information about the effect of the gas upon the metal containing solids. Pt would favour the carbon dioxide interaction with the support to form monoclinic polymorph (type Ia), while rhodium would prevent the further formation of the oxycarbonate phase.
Fil: Irusta, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina - Materia
-
Composite Materials
Fourier Transform Infrared Spectroscopy
Raman Spectroscopy And Scattering
Thermogravimetric Analysis - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/55839
Ver los metadatos del registro completo
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Effects of rhodium and platinum on the reactivity of lanthanum phasesIrusta, S.Cornaglia, Laura MariaLombardo, Eduardo AgustinComposite MaterialsFourier Transform Infrared SpectroscopyRaman Spectroscopy And ScatteringThermogravimetric Analysishttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Rhodium and platinum catalysts were prepared by wet impregnation of Anedra lanthanum oxide. The polymorph forms of La2O2CO3 have also been prepared by an appropriate treatment of lanthanum compounds in carbon dioxide. The characterisation of the phases present in these solids was performed by XRD, FT-IR, LRS, TPD and TGA. One of the untreated supports (Aldrich) was La(OH)3, and the other (Anedra) consisted mainly of II-La2O2CO3 with traces of type Ia oxycarbonate and lanthanum hydroxide. Catalysts with a low rhodium loading showed an increase of Ia-La2O2CO3 already present on the support, whereas those with a low platinum loading would not modify the phases of the lanthanum solid. A different behaviour was observed in high metal loading catalysts. In this case, metals would catalyse the decomposition of type Ia polymorph and also prevent the hydration of the support. The treatment with CO2 provides additional information about the effect of the gas upon the metal containing solids. Pt would favour the carbon dioxide interaction with the support to form monoclinic polymorph (type Ia), while rhodium would prevent the further formation of the oxycarbonate phase.Fil: Irusta, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier Science Sa2004-08info: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/11336/55839Irusta, S.; Cornaglia, Laura Maria; Lombardo, Eduardo Agustin; Effects of rhodium and platinum on the reactivity of lanthanum phases; Elsevier Science Sa; Materials Chemistry and Physics; 86; 2; 8-2004; 440-4470254-0584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchemphys.2004.04.017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:20:16Zoai:ri.conicet.gov.ar:11336/55839instacron: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 10:20:16.709CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
title |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
spellingShingle |
Effects of rhodium and platinum on the reactivity of lanthanum phases Irusta, S. Composite Materials Fourier Transform Infrared Spectroscopy Raman Spectroscopy And Scattering Thermogravimetric Analysis |
title_short |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
title_full |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
title_fullStr |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
title_full_unstemmed |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
title_sort |
Effects of rhodium and platinum on the reactivity of lanthanum phases |
dc.creator.none.fl_str_mv |
Irusta, S. Cornaglia, Laura Maria Lombardo, Eduardo Agustin |
author |
Irusta, S. |
author_facet |
Irusta, S. Cornaglia, Laura Maria Lombardo, Eduardo Agustin |
author_role |
author |
author2 |
Cornaglia, Laura Maria Lombardo, Eduardo Agustin |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Composite Materials Fourier Transform Infrared Spectroscopy Raman Spectroscopy And Scattering Thermogravimetric Analysis |
topic |
Composite Materials Fourier Transform Infrared Spectroscopy Raman Spectroscopy And Scattering Thermogravimetric Analysis |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
Rhodium and platinum catalysts were prepared by wet impregnation of Anedra lanthanum oxide. The polymorph forms of La2O2CO3 have also been prepared by an appropriate treatment of lanthanum compounds in carbon dioxide. The characterisation of the phases present in these solids was performed by XRD, FT-IR, LRS, TPD and TGA. One of the untreated supports (Aldrich) was La(OH)3, and the other (Anedra) consisted mainly of II-La2O2CO3 with traces of type Ia oxycarbonate and lanthanum hydroxide. Catalysts with a low rhodium loading showed an increase of Ia-La2O2CO3 already present on the support, whereas those with a low platinum loading would not modify the phases of the lanthanum solid. A different behaviour was observed in high metal loading catalysts. In this case, metals would catalyse the decomposition of type Ia polymorph and also prevent the hydration of the support. The treatment with CO2 provides additional information about the effect of the gas upon the metal containing solids. Pt would favour the carbon dioxide interaction with the support to form monoclinic polymorph (type Ia), while rhodium would prevent the further formation of the oxycarbonate phase. Fil: Irusta, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Cornaglia, Laura Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina |
description |
Rhodium and platinum catalysts were prepared by wet impregnation of Anedra lanthanum oxide. The polymorph forms of La2O2CO3 have also been prepared by an appropriate treatment of lanthanum compounds in carbon dioxide. The characterisation of the phases present in these solids was performed by XRD, FT-IR, LRS, TPD and TGA. One of the untreated supports (Aldrich) was La(OH)3, and the other (Anedra) consisted mainly of II-La2O2CO3 with traces of type Ia oxycarbonate and lanthanum hydroxide. Catalysts with a low rhodium loading showed an increase of Ia-La2O2CO3 already present on the support, whereas those with a low platinum loading would not modify the phases of the lanthanum solid. A different behaviour was observed in high metal loading catalysts. In this case, metals would catalyse the decomposition of type Ia polymorph and also prevent the hydration of the support. The treatment with CO2 provides additional information about the effect of the gas upon the metal containing solids. Pt would favour the carbon dioxide interaction with the support to form monoclinic polymorph (type Ia), while rhodium would prevent the further formation of the oxycarbonate phase. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-08 |
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/11336/55839 Irusta, S.; Cornaglia, Laura Maria; Lombardo, Eduardo Agustin; Effects of rhodium and platinum on the reactivity of lanthanum phases; Elsevier Science Sa; Materials Chemistry and Physics; 86; 2; 8-2004; 440-447 0254-0584 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/55839 |
identifier_str_mv |
Irusta, S.; Cornaglia, Laura Maria; Lombardo, Eduardo Agustin; Effects of rhodium and platinum on the reactivity of lanthanum phases; Elsevier Science Sa; Materials Chemistry and Physics; 86; 2; 8-2004; 440-447 0254-0584 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchemphys.2004.04.017 |
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 Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
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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1844614181720948736 |
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13.070432 |