Electron Paramagnetic Resonance Study of Chromosilicalite

Detalhes bibliográficos
Autor(a) principal: Nakamura, Ossamu
Data de Publicação: 1992
Outros Autores: Mambrim, José Silvio T., Pastore, Heloise de Oliveira, Vichi, Eduardo Joaquim de Souza, Gandra, F. G., Silva, E. C. da, Vargas, Helion, Pelzl, J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/13240
Resumo: p. 2071-2073
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spelling Nakamura, OssamuMambrim, José Silvio T.Pastore, Heloise de OliveiraVichi, Eduardo Joaquim de SouzaGandra, F. G.Silva, E. C. daVargas, HelionPelzl, J.Nakamura, OssamuMambrim, José Silvio T.Pastore, Heloise de OliveiraVichi, Eduardo Joaquim de SouzaGandra, F. G.Silva, E. C. daVargas, HelionPelzl, J.2013-10-15T15:22:36Z2013-10-15T15:22:36Z19920956-5000http://www.repositorio.ufba.br/ri/handle/ri/13240v. 88p. 2071-2073The catalytic importance of chromium has prompted numerous attempts to introduce chromium cations in zeolites. For example, Naccache and Ben Taarit,' Atanasova et aL2 and Pearce et d3 have investigated the Cr species mainly in A, X, and Y zeolites, whereas Hemidy et aL4 and Kucherov and Slinkin' reported results for the Cr-mordenite system. In a recent communication6 we reported the incorporation of Cr3+ in the structural positions of ZSM-5 type zeolites, and recently we have demonstrated the incorporation of oxygen in this zeolite with oxidation of anchored Cr3+ to noninteracting Cr6+ species.' Here an EPR study of crystalline chromosilicalite is presented with the purpose of further characterizing the distributon of each Cr3+ site in the solid. Such characterization is a necessary prelude to establishing the chromosilicalite activity as a catalyst in the production of alkenes. In addition a deconvolution process is described whereby the EPR parameters could be analysed. This method proved to be quite successful, and the results provide evidence that Cr3+ ions are at least in two substitutional-like or highly distorted sites and in another one outside the silicon framework.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-09-18T17:58:14Z No. of bitstreams: 1 111111111w.pdf: 368052 bytes, checksum: e9ac69c80e42bbda3c20f9f1809c06b8 (MD5)Approved for entry into archive by Rodrigo Meirelles(rodrigomei@ufba.br) on 2013-10-15T15:22:36Z (GMT) No. of bitstreams: 1 111111111w.pdf: 368052 bytes, checksum: e9ac69c80e42bbda3c20f9f1809c06b8 (MD5)Made available in DSpace on 2013-10-15T15:22:36Z (GMT). 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dc.title.pt_BR.fl_str_mv Electron Paramagnetic Resonance Study of Chromosilicalite
dc.title.alternative.pt_BR.fl_str_mv Journal of the Chemical Society, Faraday Transactions
title Electron Paramagnetic Resonance Study of Chromosilicalite
spellingShingle Electron Paramagnetic Resonance Study of Chromosilicalite
Nakamura, Ossamu
title_short Electron Paramagnetic Resonance Study of Chromosilicalite
title_full Electron Paramagnetic Resonance Study of Chromosilicalite
title_fullStr Electron Paramagnetic Resonance Study of Chromosilicalite
title_full_unstemmed Electron Paramagnetic Resonance Study of Chromosilicalite
title_sort Electron Paramagnetic Resonance Study of Chromosilicalite
author Nakamura, Ossamu
author_facet Nakamura, Ossamu
Mambrim, José Silvio T.
Pastore, Heloise de Oliveira
Vichi, Eduardo Joaquim de Souza
Gandra, F. G.
Silva, E. C. da
Vargas, Helion
Pelzl, J.
author_role author
author2 Mambrim, José Silvio T.
Pastore, Heloise de Oliveira
Vichi, Eduardo Joaquim de Souza
Gandra, F. G.
Silva, E. C. da
Vargas, Helion
Pelzl, J.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Nakamura, Ossamu
Mambrim, José Silvio T.
Pastore, Heloise de Oliveira
Vichi, Eduardo Joaquim de Souza
Gandra, F. G.
Silva, E. C. da
Vargas, Helion
Pelzl, J.
Nakamura, Ossamu
Mambrim, José Silvio T.
Pastore, Heloise de Oliveira
Vichi, Eduardo Joaquim de Souza
Gandra, F. G.
Silva, E. C. da
Vargas, Helion
Pelzl, J.
description p. 2071-2073
publishDate 1992
dc.date.issued.fl_str_mv 1992
dc.date.accessioned.fl_str_mv 2013-10-15T15:22:36Z
dc.date.available.fl_str_mv 2013-10-15T15:22:36Z
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/13240
dc.identifier.issn.none.fl_str_mv 0956-5000
dc.identifier.number.pt_BR.fl_str_mv v. 88
identifier_str_mv 0956-5000
v. 88
url http://www.repositorio.ufba.br/ri/handle/ri/13240
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.publisher.none.fl_str_mv Journal of the Chemical Society, Faraday Transactions
publisher.none.fl_str_mv Journal of the Chemical Society, Faraday Transactions
dc.source.pt_BR.fl_str_mv 10.1039/FT9928802071
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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