Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I-
Main Author: | |
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Publication Date: | 1997 |
Format: | Article |
Language: | por |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1590/S0100-40421997000300002 http://hdl.handle.net/11449/22289 |
Summary: | The hydrocarbonylation reaction of ethanol with a CO/H2 mixture assisted by Ru(acac)3/iodide was investigated. Bronsted and Lewis acids and iodides salt were used as homogeneous promoters. The etherification reaction was the main reaction under typical acidic conditions of the catalytic system. When a hydrocarbon solvent (toluene) was added to the initial reaction, the alcohol conversion and the carbonylation products were increased. The catalytic activity of the Bronsted acids (conv. EtOH = 71-92%) was higher than that of the Lewis acids promoters (conv. EtOH = 65-85%). The salt present the lower catalytic activity among the promoters used. The long time reaction carried out with ethanol showed an increase of the product selectivity of the homologation and carbonylation reactions while the etherification reaction selectivity decreased. The recycled ether led to 60-65% ethanol conversion to C5 and C6 products. The main catalytic species are H+[Ru(CO)3I3]-, [HRu3(CO)11]- and [HRu(CO)4]-. The first one is active in the carbonylation and homologation reactions of alcohols while the two others take part only in the homologation reaction. |
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Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I-Ethanol, reactions with co/h2 in the presence of the ru(acac)3/i- catalytic systemEthanolhydrocarbonylationrutheniumcatalysisThe hydrocarbonylation reaction of ethanol with a CO/H2 mixture assisted by Ru(acac)3/iodide was investigated. Bronsted and Lewis acids and iodides salt were used as homogeneous promoters. The etherification reaction was the main reaction under typical acidic conditions of the catalytic system. When a hydrocarbon solvent (toluene) was added to the initial reaction, the alcohol conversion and the carbonylation products were increased. The catalytic activity of the Bronsted acids (conv. EtOH = 71-92%) was higher than that of the Lewis acids promoters (conv. EtOH = 65-85%). The salt present the lower catalytic activity among the promoters used. The long time reaction carried out with ethanol showed an increase of the product selectivity of the homologation and carbonylation reactions while the etherification reaction selectivity decreased. The recycled ether led to 60-65% ethanol conversion to C5 and C6 products. The main catalytic species are H+[Ru(CO)3I3]-, [HRu3(CO)11]- and [HRu(CO)4]-. The first one is active in the carbonylation and homologation reactions of alcohols while the two others take part only in the homologation reaction.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNESP IBILCE Depto. de Química e GeociênciasUNESP IBILCE Depto. de Química e GeociênciasSociedade Brasileira de QuímicaUniversidade Estadual Paulista (Unesp)Trabuco, Elizeu [UNESP]2014-05-20T14:03:16Z2014-05-20T14:03:16Z1997-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article233-237application/pdfhttp://dx.doi.org/10.1590/S0100-40421997000300002Química Nova. Sociedade Brasileira de Química, v. 20, n. 3, p. 233-237, 1997.0100-4042http://hdl.handle.net/11449/2228910.1590/S0100-40421997000300002S0100-40421997000300002S0100-40421997000300002.pdf6947341745767693SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporQuímica Nova0.6460,255info:eu-repo/semantics/openAccess2023-11-11T06:15:41Zoai:repositorio.unesp.br:11449/22289Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-11T06:15:41Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- Ethanol, reactions with co/h2 in the presence of the ru(acac)3/i- catalytic system |
title |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
spellingShingle |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- Trabuco, Elizeu [UNESP] Ethanol hydrocarbonylation ruthenium catalysis |
title_short |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
title_full |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
title_fullStr |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
title_full_unstemmed |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
title_sort |
Reações de Etanol com CO/H2 na Presença do Sistema Catalítico Ru(acac)3/I- |
author |
Trabuco, Elizeu [UNESP] |
author_facet |
Trabuco, Elizeu [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Trabuco, Elizeu [UNESP] |
dc.subject.por.fl_str_mv |
Ethanol hydrocarbonylation ruthenium catalysis |
topic |
Ethanol hydrocarbonylation ruthenium catalysis |
description |
The hydrocarbonylation reaction of ethanol with a CO/H2 mixture assisted by Ru(acac)3/iodide was investigated. Bronsted and Lewis acids and iodides salt were used as homogeneous promoters. The etherification reaction was the main reaction under typical acidic conditions of the catalytic system. When a hydrocarbon solvent (toluene) was added to the initial reaction, the alcohol conversion and the carbonylation products were increased. The catalytic activity of the Bronsted acids (conv. EtOH = 71-92%) was higher than that of the Lewis acids promoters (conv. EtOH = 65-85%). The salt present the lower catalytic activity among the promoters used. The long time reaction carried out with ethanol showed an increase of the product selectivity of the homologation and carbonylation reactions while the etherification reaction selectivity decreased. The recycled ether led to 60-65% ethanol conversion to C5 and C6 products. The main catalytic species are H+[Ru(CO)3I3]-, [HRu3(CO)11]- and [HRu(CO)4]-. The first one is active in the carbonylation and homologation reactions of alcohols while the two others take part only in the homologation reaction. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-06-01 2014-05-20T14:03:16Z 2014-05-20T14:03:16Z |
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://dx.doi.org/10.1590/S0100-40421997000300002 Química Nova. Sociedade Brasileira de Química, v. 20, n. 3, p. 233-237, 1997. 0100-4042 http://hdl.handle.net/11449/22289 10.1590/S0100-40421997000300002 S0100-40421997000300002 S0100-40421997000300002.pdf 6947341745767693 |
url |
http://dx.doi.org/10.1590/S0100-40421997000300002 http://hdl.handle.net/11449/22289 |
identifier_str_mv |
Química Nova. Sociedade Brasileira de Química, v. 20, n. 3, p. 233-237, 1997. 0100-4042 10.1590/S0100-40421997000300002 S0100-40421997000300002 S0100-40421997000300002.pdf 6947341745767693 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Química Nova 0.646 0,255 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
233-237 application/pdf |
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 |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789678030553088 |