A spectroscopic study of Au/CeXZr1-XO2 catalysts

Detalhes bibliográficos
Autor(a) principal: Ferreira, Hadma Sousa
Data de Publicação: 2009
Outros Autores: Varela, Maria do Carmo Rangel Santos, Ferreira, Márcio Luís Oliveira, Pepe, Iuri Muniz, Silva, Antônio Ferreira da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/6895
Resumo: p.141-145
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spelling Ferreira, Hadma SousaVarela, Maria do Carmo Rangel SantosFerreira, Márcio Luís OliveiraPepe, Iuri MunizSilva, Antônio Ferreira daFerreira, Hadma SousaVarela, Maria do Carmo Rangel SantosFerreira, Márcio Luís OliveiraPepe, Iuri MunizSilva, Antônio Ferreira da2012-10-08T18:33:43Z2012-10-08T18:33:43Z2009-040103-9733http://www.repositorio.ufba.br/ri/handle/ri/6895v. 39, n. 1p.141-145The nature of gold species in Au/CeXZr1-XO2 catalysts was successfully investigated using the visible and near infrared photoacoustic spectroscopy and Fourier transform infrared spectroscopy of adsorbed carbon monoxide. It was found that the visible and near infrared photoacoustic spectroscopy is a powerful technique for investigating the changes of gold particle size due to addition of zirconium and the oxidation state of gold particles. It was also noted that the increase of zirconium in the solids makes gold incorporation more difficult due to the electronic shielding caused by zirconium, decreasing the probability of replacing cerium by gold. For the samples studied, the particle size ranged from 20-30 nm and the Au+, Au3+ and Auº species were found in the catalysts.Submitted by Texeira Ana (atanateixeira@gmail.com) on 2012-10-08T18:33:43Z No. of bitstreams: 1 Ferreira, Hadma Sousa.pdf: 199744 bytes, checksum: 5382777888f6c1325f3f0d5d674bc941 (MD5)Made available in DSpace on 2012-10-08T18:33:43Z (GMT). No. of bitstreams: 1 Ferreira, Hadma Sousa.pdf: 199744 bytes, checksum: 5382777888f6c1325f3f0d5d674bc941 (MD5) Previous issue date: 2009-04São Paulohttp://dx.doi.org/10.1590/S0103-97332009000200003reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAGold catalystsPhotoacoustic spectroscopyCO adsorbedA spectroscopic study of Au/CeXZr1-XO2 catalystsBrazilian Journal of Physicsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleenginfo:eu-repo/semantics/openAccessORIGINALFerreira, Hadma Sousa.pdfFerreira, Hadma Sousa.pdfapplication/pdf199744https://repositorio.ufba.br/bitstream/ri/6895/1/Ferreira%2c%20Hadma%20Sousa.pdf5382777888f6c1325f3f0d5d674bc941MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6895/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTFerreira, Hadma Sousa.pdf.txtFerreira, Hadma Sousa.pdf.txtExtracted texttext/plain22017https://repositorio.ufba.br/bitstream/ri/6895/3/Ferreira%2c%20Hadma%20Sousa.pdf.txt4995ae4dc2e4763bd364a9db640c6fe1MD53ri/68952022-07-05 14:03:10.638oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:10Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv A spectroscopic study of Au/CeXZr1-XO2 catalysts
dc.title.alternative.pt_BR.fl_str_mv Brazilian Journal of Physics
title A spectroscopic study of Au/CeXZr1-XO2 catalysts
spellingShingle A spectroscopic study of Au/CeXZr1-XO2 catalysts
Ferreira, Hadma Sousa
Gold catalysts
Photoacoustic spectroscopy
CO adsorbed
title_short A spectroscopic study of Au/CeXZr1-XO2 catalysts
title_full A spectroscopic study of Au/CeXZr1-XO2 catalysts
title_fullStr A spectroscopic study of Au/CeXZr1-XO2 catalysts
title_full_unstemmed A spectroscopic study of Au/CeXZr1-XO2 catalysts
title_sort A spectroscopic study of Au/CeXZr1-XO2 catalysts
author Ferreira, Hadma Sousa
author_facet Ferreira, Hadma Sousa
Varela, Maria do Carmo Rangel Santos
Ferreira, Márcio Luís Oliveira
Pepe, Iuri Muniz
Silva, Antônio Ferreira da
author_role author
author2 Varela, Maria do Carmo Rangel Santos
Ferreira, Márcio Luís Oliveira
Pepe, Iuri Muniz
Silva, Antônio Ferreira da
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Hadma Sousa
Varela, Maria do Carmo Rangel Santos
Ferreira, Márcio Luís Oliveira
Pepe, Iuri Muniz
Silva, Antônio Ferreira da
Ferreira, Hadma Sousa
Varela, Maria do Carmo Rangel Santos
Ferreira, Márcio Luís Oliveira
Pepe, Iuri Muniz
Silva, Antônio Ferreira da
dc.subject.por.fl_str_mv Gold catalysts
Photoacoustic spectroscopy
CO adsorbed
topic Gold catalysts
Photoacoustic spectroscopy
CO adsorbed
description p.141-145
publishDate 2009
dc.date.issued.fl_str_mv 2009-04
dc.date.accessioned.fl_str_mv 2012-10-08T18:33:43Z
dc.date.available.fl_str_mv 2012-10-08T18:33:43Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6895
dc.identifier.issn.none.fl_str_mv 0103-9733
dc.identifier.number.pt_BR.fl_str_mv v. 39, n. 1
identifier_str_mv 0103-9733
v. 39, n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/6895
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1590/S0103-97332009000200003
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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