Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina

Detalhes bibliográficos
Autor(a) principal: Garcia, Fillipe Augusto da Costa
Data de Publicação: 2007
Outros Autores: Braga, Valdeilson Souza, Dias, José Alves, Silva, Júnia Chaves Marinho e, Dias, Sílvia Cláudia Loureiro, Davo, Jorge L. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4849
Resumo: p.101–107
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spelling Garcia, Fillipe Augusto da CostaBraga, Valdeilson SouzaDias, José AlvesSilva, Júnia Chaves Marinho eDias, Sílvia Cláudia LoureiroDavo, Jorge L. B.Garcia, Fillipe Augusto da CostaBraga, Valdeilson SouzaDias, José AlvesSilva, Júnia Chaves Marinho eDias, Sílvia Cláudia LoureiroDavo, Jorge L. B.2011-12-14T12:02:30Z2011-12-14T12:02:30Z20071572-879Xhttp://www.repositorio.ufba.br/ri/handle/ri/4849v. 119p.101–107Copper oxide and niobium pentoxide were supported on silica–alumina with 2, 5, 10, 15 and 25 mass% loadings and 1:1 mass ratio of CuO:Nb2O5. XRD and BET measurements confirmed that monolayer coverage is reached with loadings between 5–10 mass%(~308 m2 g–1). The DRIFTS spectra of pyridine adsorbed catalysts showed bands associated with Bro¨nsted, Lewis and a combination of both acidic sites. Thermal analysis and liquid phase microcalorimetry provided the parameters for the best catalyst (10 mass%), which has the highest number of acidic sites (0.38 mmol g–1) and enthalpies of interaction with pyridine for Bro¨nsted and Lewis sites (DH1 = –107.5 and DH2 = –64.4 kJ mol–1, respectively).Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2011-12-14T12:02:30Z No. of bitstreams: 1 06 fulltext.pdf: 218871 bytes, checksum: 550ac6a51f96253ed0ad27908e118975 (MD5)Made available in DSpace on 2011-12-14T12:02:30Z (GMT). No. of bitstreams: 1 06 fulltext.pdf: 218871 bytes, checksum: 550ac6a51f96253ed0ad27908e118975 (MD5) Previous issue date: 2007Copper oxideNiobium pentoxideLiquid phase microcalorimetryAcidic characterizationSupported catalystAcidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–AluminaCatalysis Lettersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINAL06 fulltext.pdf06 fulltext.pdfapplication/pdf218871https://repositorio.ufba.br/bitstream/ri/4849/1/06%20fulltext.pdf550ac6a51f96253ed0ad27908e118975MD51LICENSElicense.txtlicense.txttext/plain1809https://repositorio.ufba.br/bitstream/ri/4849/2/license.txt8bb3e3eb871f5854a9ec419f68651b60MD52TEXT06 fulltext.pdf.txt06 fulltext.pdf.txtExtracted texttext/plain29440https://repositorio.ufba.br/bitstream/ri/4849/3/06%20fulltext.pdf.txte040a5b0abac649257a7d2f5bf8ba999MD53ri/48492022-07-05 14:03:17.665oai:repositorio.ufba.br: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ório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:17Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
dc.title.alternative.pt_BR.fl_str_mv Catalysis Letters
title Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
spellingShingle Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
Garcia, Fillipe Augusto da Costa
Copper oxide
Niobium pentoxide
Liquid phase microcalorimetry
Acidic characterization
Supported catalyst
title_short Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
title_full Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
title_fullStr Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
title_full_unstemmed Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
title_sort Acidic Characterization of Copper Oxide and Niobium Pentoxide Supported on Silica–Alumina
author Garcia, Fillipe Augusto da Costa
author_facet Garcia, Fillipe Augusto da Costa
Braga, Valdeilson Souza
Dias, José Alves
Silva, Júnia Chaves Marinho e
Dias, Sílvia Cláudia Loureiro
Davo, Jorge L. B.
author_role author
author2 Braga, Valdeilson Souza
Dias, José Alves
Silva, Júnia Chaves Marinho e
Dias, Sílvia Cláudia Loureiro
Davo, Jorge L. B.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Garcia, Fillipe Augusto da Costa
Braga, Valdeilson Souza
Dias, José Alves
Silva, Júnia Chaves Marinho e
Dias, Sílvia Cláudia Loureiro
Davo, Jorge L. B.
Garcia, Fillipe Augusto da Costa
Braga, Valdeilson Souza
Dias, José Alves
Silva, Júnia Chaves Marinho e
Dias, Sílvia Cláudia Loureiro
Davo, Jorge L. B.
dc.subject.por.fl_str_mv Copper oxide
Niobium pentoxide
Liquid phase microcalorimetry
Acidic characterization
Supported catalyst
topic Copper oxide
Niobium pentoxide
Liquid phase microcalorimetry
Acidic characterization
Supported catalyst
description p.101–107
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2011-12-14T12:02:30Z
dc.date.available.fl_str_mv 2011-12-14T12:02:30Z
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/4849
dc.identifier.issn.none.fl_str_mv 1572-879X
dc.identifier.number.pt_BR.fl_str_mv v. 119
identifier_str_mv 1572-879X
v. 119
url http://www.repositorio.ufba.br/ri/handle/ri/4849
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.none.fl_str_mv reponame:Repositório Institucional da UFBA
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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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