Characterization and catalytic activity of zirconium dioxide prepared by sol-gel

Autores
Davies, Lilian Emilia; Bonini, Norberto Alejandro; Locatelli, Silvano; Gonzo, Elio Emilio
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Zirconia samples prepared from Zr(n-OC3H7)4 and ZrOCl2 were characterized by XRD,BET surface area, TG-DTA, TEM/SEM, FTIR, and D2O exchange. Oxides obtained from the alkoxide contain two types of hydroxyl groups at 3704 and 3597 cm-1, which do not exchange with D2O. Those obtained from ZrOCl2 produced three types of hydroxyl groups at 3774, 3733 and 3671 cm-1, which do exchange with D2O. Surface acidity was determined by FTIR of adsorbed lutidine. Only Lewis acid sites were found on samples from ZrOCl2 hydrolysis. FTIR spectra of calcined samples exhibited strong absorption bands in the 1800 to 1000 cm-1 region,which are ascribed to various types of carbonate and bicarbonate species. These ones are strongly adsorbed on the surface oxide and they are removed only after 3 hours at 600 ºC in stream of H2. Samples derive from the alkoxide precursor restore the original carbonate species after exposure to O2 at 600ºC. Catalytic activity for i-propanol dehydration/dehydrogenation showed the absence of basic centers and an intermediate dehydration activity between that of silica and alumina.
Fil: Davies, Lilian Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Locatelli, Silvano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Materia
Zirconium oxide
zirconia
acidity
FTIR, 2,6-lutidine
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:11336/67162
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/67162
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Characterization and catalytic activity of zirconium dioxide prepared by sol-gelDavies, Lilian EmiliaBonini, Norberto AlejandroLocatelli, SilvanoGonzo, Elio EmilioZirconium oxidezirconiaacidityFTIR, 2,6-lutidinehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Zirconia samples prepared from Zr(n-OC3H7)4 and ZrOCl2 were characterized by XRD,BET surface area, TG-DTA, TEM/SEM, FTIR, and D2O exchange. Oxides obtained from the alkoxide contain two types of hydroxyl groups at 3704 and 3597 cm-1, which do not exchange with D2O. Those obtained from ZrOCl2 produced three types of hydroxyl groups at 3774, 3733 and 3671 cm-1, which do exchange with D2O. Surface acidity was determined by FTIR of adsorbed lutidine. Only Lewis acid sites were found on samples from ZrOCl2 hydrolysis. FTIR spectra of calcined samples exhibited strong absorption bands in the 1800 to 1000 cm-1 region,which are ascribed to various types of carbonate and bicarbonate species. These ones are strongly adsorbed on the surface oxide and they are removed only after 3 hours at 600 ºC in stream of H2. Samples derive from the alkoxide precursor restore the original carbonate species after exposure to O2 at 600ºC. Catalytic activity for i-propanol dehydration/dehydrogenation showed the absence of basic centers and an intermediate dehydration activity between that of silica and alumina.Fil: Davies, Lilian Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Locatelli, Silvano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaPlapiqui2005-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67162Davies, Lilian Emilia; Bonini, Norberto Alejandro; Locatelli, Silvano; Gonzo, Elio Emilio; Characterization and catalytic activity of zirconium dioxide prepared by sol-gel; Plapiqui; Latin American Applied Research; 35; 1; 3-2005; 23-280327-07931851-8796CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/sds8xkinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:14:09Zoai:ri.conicet.gov.ar:11336/67162instacron: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 10:14:09.823CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
title Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
spellingShingle Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
Davies, Lilian Emilia
Zirconium oxide
zirconia
acidity
FTIR, 2,6-lutidine
title_short Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
title_full Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
title_fullStr Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
title_full_unstemmed Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
title_sort Characterization and catalytic activity of zirconium dioxide prepared by sol-gel
dc.creator.none.fl_str_mv Davies, Lilian Emilia
Bonini, Norberto Alejandro
Locatelli, Silvano
Gonzo, Elio Emilio
author Davies, Lilian Emilia
author_facet Davies, Lilian Emilia
Bonini, Norberto Alejandro
Locatelli, Silvano
Gonzo, Elio Emilio
author_role author
author2 Bonini, Norberto Alejandro
Locatelli, Silvano
Gonzo, Elio Emilio
author2_role author
author
author
dc.subject.none.fl_str_mv Zirconium oxide
zirconia
acidity
FTIR, 2,6-lutidine
topic Zirconium oxide
zirconia
acidity
FTIR, 2,6-lutidine
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Zirconia samples prepared from Zr(n-OC3H7)4 and ZrOCl2 were characterized by XRD,BET surface area, TG-DTA, TEM/SEM, FTIR, and D2O exchange. Oxides obtained from the alkoxide contain two types of hydroxyl groups at 3704 and 3597 cm-1, which do not exchange with D2O. Those obtained from ZrOCl2 produced three types of hydroxyl groups at 3774, 3733 and 3671 cm-1, which do exchange with D2O. Surface acidity was determined by FTIR of adsorbed lutidine. Only Lewis acid sites were found on samples from ZrOCl2 hydrolysis. FTIR spectra of calcined samples exhibited strong absorption bands in the 1800 to 1000 cm-1 region,which are ascribed to various types of carbonate and bicarbonate species. These ones are strongly adsorbed on the surface oxide and they are removed only after 3 hours at 600 ºC in stream of H2. Samples derive from the alkoxide precursor restore the original carbonate species after exposure to O2 at 600ºC. Catalytic activity for i-propanol dehydration/dehydrogenation showed the absence of basic centers and an intermediate dehydration activity between that of silica and alumina.
Fil: Davies, Lilian Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Bonini, Norberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Locatelli, Silvano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
description Zirconia samples prepared from Zr(n-OC3H7)4 and ZrOCl2 were characterized by XRD,BET surface area, TG-DTA, TEM/SEM, FTIR, and D2O exchange. Oxides obtained from the alkoxide contain two types of hydroxyl groups at 3704 and 3597 cm-1, which do not exchange with D2O. Those obtained from ZrOCl2 produced three types of hydroxyl groups at 3774, 3733 and 3671 cm-1, which do exchange with D2O. Surface acidity was determined by FTIR of adsorbed lutidine. Only Lewis acid sites were found on samples from ZrOCl2 hydrolysis. FTIR spectra of calcined samples exhibited strong absorption bands in the 1800 to 1000 cm-1 region,which are ascribed to various types of carbonate and bicarbonate species. These ones are strongly adsorbed on the surface oxide and they are removed only after 3 hours at 600 ºC in stream of H2. Samples derive from the alkoxide precursor restore the original carbonate species after exposure to O2 at 600ºC. Catalytic activity for i-propanol dehydration/dehydrogenation showed the absence of basic centers and an intermediate dehydration activity between that of silica and alumina.
publishDate 2005
dc.date.none.fl_str_mv 2005-03
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/11336/67162
Davies, Lilian Emilia; Bonini, Norberto Alejandro; Locatelli, Silvano; Gonzo, Elio Emilio; Characterization and catalytic activity of zirconium dioxide prepared by sol-gel; Plapiqui; Latin American Applied Research; 35; 1; 3-2005; 23-28
0327-0793
1851-8796
CONICET Digital
CONICET
url http://hdl.handle.net/11336/67162
identifier_str_mv Davies, Lilian Emilia; Bonini, Norberto Alejandro; Locatelli, Silvano; Gonzo, Elio Emilio; Characterization and catalytic activity of zirconium dioxide prepared by sol-gel; Plapiqui; Latin American Applied Research; 35; 1; 3-2005; 23-28
0327-0793
1851-8796
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://ref.scielo.org/sds8xk
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
application/pdf
dc.publisher.none.fl_str_mv Plapiqui
publisher.none.fl_str_mv Plapiqui
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 13.070432

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