n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts

Detalhes bibliográficos
Autor(a) principal: Varela, Maria do Carmo Rangel Santos
Data de Publicação: 2000
Outros Autores: Carvalho, Luiz Souza, Reyes, P., Parera, José Miguel, Fígoli, N. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/7962
Resumo: Texto completo: acesso restrito. p.171-178
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spelling Varela, Maria do Carmo Rangel SantosCarvalho, Luiz SouzaReyes, P.Parera, José MiguelFígoli, N. S.Varela, Maria do Carmo Rangel SantosCarvalho, Luiz SouzaReyes, P.Parera, José MiguelFígoli, N. S.2013-01-17T10:26:21Z20001011-372Xhttp://www.repositorio.ufba.br/ri/handle/ri/7962v. 64, n. 2-4Texto completo: acesso restrito. p.171-178Pt, Pt–Sn and Pt–W supported on γ‐Al2O3 were prepared and characterized by H2 chemisorption, TEM, TPR, test reactions of n‐C8 reforming (500°C), cyclohexane dehydrogenation (315°C) and n‐C5 isomerization (500°C), and TPO of the used catalysts. Pt is completely reduced to Pt0, but only a small fraction of Sn and of W oxides are reduced to metal. The second element decreases the metallic properties of Pt (H2 chemisorption and dehydrogenation activity) but increases dehydrocyclization and stability. In spite of the large decrease in dehydrogenation activity of Pt in the bimetallics, the metallic function is not the controlling function of the bifunctional mechanisms of dehydrocyclization. Pt–Sn/Al2O3 is the best catalyst with the highest acid to metallic functions ratio (due to its lower metallic activity) presenting a xylenes distribution different from the other catalysts. The acid function of Pt–Sn/Al2O3 is tuned in order to increase isomerization and cyclization and to decrease cracking, as compared to Pt and Pt–W.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-17T10:26:21Z No. of bitstreams: 1 Rangel.pdf: 120752 bytes, checksum: e98a5cc75334271782a6ac4965b5d448 (MD5)Made available in DSpace on 2013-01-17T10:26:21Z (GMT). No. of bitstreams: 1 Rangel.pdf: 120752 bytes, checksum: e98a5cc75334271782a6ac4965b5d448 (MD5) Previous issue date: 2000http://dx.doi.org/10.1023/A:1019082819383reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAbimetallic catalystsmetal and acid functionsn‐C8 reformingn‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalystsCatalysis Lettersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALRangel.pdfRangel.pdfapplication/pdf120752https://repositorio.ufba.br/bitstream/ri/7962/1/Rangel.pdfe98a5cc75334271782a6ac4965b5d448MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/7962/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTRangel.pdf.txtRangel.pdf.txtExtracted texttext/plain31717https://repositorio.ufba.br/bitstream/ri/7962/3/Rangel.pdf.txt55170cc4afa7f2185f6bf169af7412edMD53ri/79622022-07-05 14:03:08.917oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:08Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
dc.title.alternative.pt_BR.fl_str_mv Catalysis Letters
title n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
spellingShingle n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
Varela, Maria do Carmo Rangel Santos
bimetallic catalysts
metal and acid functions
n‐C8 reforming
title_short n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
title_full n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
title_fullStr n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
title_full_unstemmed n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
title_sort n‐octane reforming over alumina‐supported Pt, Pt–Sn and Pt–W catalysts
author Varela, Maria do Carmo Rangel Santos
author_facet Varela, Maria do Carmo Rangel Santos
Carvalho, Luiz Souza
Reyes, P.
Parera, José Miguel
Fígoli, N. S.
author_role author
author2 Carvalho, Luiz Souza
Reyes, P.
Parera, José Miguel
Fígoli, N. S.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Varela, Maria do Carmo Rangel Santos
Carvalho, Luiz Souza
Reyes, P.
Parera, José Miguel
Fígoli, N. S.
Varela, Maria do Carmo Rangel Santos
Carvalho, Luiz Souza
Reyes, P.
Parera, José Miguel
Fígoli, N. S.
dc.subject.por.fl_str_mv bimetallic catalysts
metal and acid functions
n‐C8 reforming
topic bimetallic catalysts
metal and acid functions
n‐C8 reforming
description Texto completo: acesso restrito. p.171-178
publishDate 2000
dc.date.issued.fl_str_mv 2000
dc.date.accessioned.fl_str_mv 2013-01-17T10:26:21Z
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/7962
dc.identifier.issn.none.fl_str_mv 1011-372X
dc.identifier.number.pt_BR.fl_str_mv v. 64, n. 2-4
identifier_str_mv 1011-372X
v. 64, n. 2-4
url http://www.repositorio.ufba.br/ri/handle/ri/7962
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/10.1023/A:1019082819383
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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