Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500958 |
Resumo: | The support effect on the properties of iridium catalysts for C-C and C-O hydrogenolysis was investigated. Cyclohexane conversion and glycerol hydrogenolysis were used to compare the behavior of iridium catalysts in terms of C-C and C-O cleavage. The nature of the support influenced the catalyst performance in both cyclohexane conversion and glycerol hydrogenolysis. This effect was more evident on the product selectivity. Ir/SiO2 catalyst presented the highest cyclohexane hydrogenolysis activity and the highest selectivity to minor hydrocarbons formed from hexane re-adsorption. For glycerol hydrogenolysis, all catalysts displayed a higher selectivity to products formed by C-O cleavage, mainly 1,2-propanediol (1,2-PDO). Ir/ZrO2 catalyst presented the highest activity in all reaction conditions and the lowest selectivity to minor alcohols produced by C-C cleavage like methanol, ethanol and ethylene glycol. The results were explained in terms of the requirements and the structure of the catalytic sites. |
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Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sitesiridium catalystshydrogenolysisC-C cleavageC-O cleavagesupport effectThe support effect on the properties of iridium catalysts for C-C and C-O hydrogenolysis was investigated. Cyclohexane conversion and glycerol hydrogenolysis were used to compare the behavior of iridium catalysts in terms of C-C and C-O cleavage. The nature of the support influenced the catalyst performance in both cyclohexane conversion and glycerol hydrogenolysis. This effect was more evident on the product selectivity. Ir/SiO2 catalyst presented the highest cyclohexane hydrogenolysis activity and the highest selectivity to minor hydrocarbons formed from hexane re-adsorption. For glycerol hydrogenolysis, all catalysts displayed a higher selectivity to products formed by C-O cleavage, mainly 1,2-propanediol (1,2-PDO). Ir/ZrO2 catalyst presented the highest activity in all reaction conditions and the lowest selectivity to minor alcohols produced by C-C cleavage like methanol, ethanol and ethylene glycol. The results were explained in terms of the requirements and the structure of the catalytic sites.Sociedade Brasileira de Química2016-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500958Journal of the Brazilian Chemical Society v.27 n.5 2016reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20150354info:eu-repo/semantics/openAccessPamphile-Adrián,Aracelis J.Florez-Rodriguez,Pedro P.Passos,Fabio B.eng2016-05-18T00:00:00Zoai:scielo:S0103-50532016000500958Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2016-05-18T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
title |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
spellingShingle |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites Pamphile-Adrián,Aracelis J. iridium catalysts hydrogenolysis C-C cleavage C-O cleavage support effect |
title_short |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
title_full |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
title_fullStr |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
title_full_unstemmed |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
title_sort |
Iridium Catalysts for C-C and C-O Hydrogenolysis: Catalytic Consequences of Iridium Sites |
author |
Pamphile-Adrián,Aracelis J. |
author_facet |
Pamphile-Adrián,Aracelis J. Florez-Rodriguez,Pedro P. Passos,Fabio B. |
author_role |
author |
author2 |
Florez-Rodriguez,Pedro P. Passos,Fabio B. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Pamphile-Adrián,Aracelis J. Florez-Rodriguez,Pedro P. Passos,Fabio B. |
dc.subject.por.fl_str_mv |
iridium catalysts hydrogenolysis C-C cleavage C-O cleavage support effect |
topic |
iridium catalysts hydrogenolysis C-C cleavage C-O cleavage support effect |
description |
The support effect on the properties of iridium catalysts for C-C and C-O hydrogenolysis was investigated. Cyclohexane conversion and glycerol hydrogenolysis were used to compare the behavior of iridium catalysts in terms of C-C and C-O cleavage. The nature of the support influenced the catalyst performance in both cyclohexane conversion and glycerol hydrogenolysis. This effect was more evident on the product selectivity. Ir/SiO2 catalyst presented the highest cyclohexane hydrogenolysis activity and the highest selectivity to minor hydrocarbons formed from hexane re-adsorption. For glycerol hydrogenolysis, all catalysts displayed a higher selectivity to products formed by C-O cleavage, mainly 1,2-propanediol (1,2-PDO). Ir/ZrO2 catalyst presented the highest activity in all reaction conditions and the lowest selectivity to minor alcohols produced by C-C cleavage like methanol, ethanol and ethylene glycol. The results were explained in terms of the requirements and the structure of the catalytic sites. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-05-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500958 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500958 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/0103-5053.20150354 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.27 n.5 2016 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318178340175872 |