Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/4779 |
Resumo: | The synthesis of 1,1-dibutoxyethane or acetaldehyde dibutylacetal was studied in a batch reactor by reacting butanol and acetaldehyde in a liquid phase, using Amberlyst-15 as the catalyst. The reaction equilibrium constant was experimentally determined in the temperature range 20-40 °C at 6 atm, where Ka = 0.00959 exp[1755.3/T (K)]. The standard properties of the reaction at 298.15 K were estimated: ΔH° = -14.59 kJ mol-1, ΔG° = -3.07 kJ mol-1, and ΔS° = -38.64 J mol-1 K-1. Kinetic experiments were performed in the temperature range 10-50 °C at 6 atm. A two-parameter kinetic law based on a Langmuir-Hinshelwood rate expression, using activity coefficients from the UNIFAC method, was used. The kinetic parameters are kc = 2.39 E9 exp[-6200.9/T (K)] (mol gcat -1 min-1) and ks,D = 2.25 E-4 exp[3303.1/T (K)]. The activation energy of the reaction is 51.55 kJ mol-1. This work is an important step for further implementation of an integrated reaction-separation process, such as a simulated moving-bed reactor. |
id |
RCAP_a04f1daf61a0a274c500b56861196492 |
---|---|
oai_identifier_str |
oai:bibliotecadigital.ipb.pt:10198/4779 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resinBiofuelsAcetal 1,1-dibutoxyethaneSimulated moving bed reactorThe synthesis of 1,1-dibutoxyethane or acetaldehyde dibutylacetal was studied in a batch reactor by reacting butanol and acetaldehyde in a liquid phase, using Amberlyst-15 as the catalyst. The reaction equilibrium constant was experimentally determined in the temperature range 20-40 °C at 6 atm, where Ka = 0.00959 exp[1755.3/T (K)]. The standard properties of the reaction at 298.15 K were estimated: ΔH° = -14.59 kJ mol-1, ΔG° = -3.07 kJ mol-1, and ΔS° = -38.64 J mol-1 K-1. Kinetic experiments were performed in the temperature range 10-50 °C at 6 atm. A two-parameter kinetic law based on a Langmuir-Hinshelwood rate expression, using activity coefficients from the UNIFAC method, was used. The kinetic parameters are kc = 2.39 E9 exp[-6200.9/T (K)] (mol gcat -1 min-1) and ks,D = 2.25 E-4 exp[3303.1/T (K)]. The activation energy of the reaction is 51.55 kJ mol-1. This work is an important step for further implementation of an integrated reaction-separation process, such as a simulated moving-bed reactor.Biblioteca Digital do IPBGraça, Nuno S.Pais, Luís S.Silva, Viviana M.T.M.Rodrigues, Alírio2011-05-31T11:53:19Z20102010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/4779engGraça, N.S.; Pais, L.S.; Silva, V.M.T.M.; Rodrigues, A.E. (2010). Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin. Industrial Engineering Chemistry Research. ISSN 0888-5885. 49, p. 6763-6771.0888-588510.1021/ie901635j1520-5045info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:14:06Zoai:bibliotecadigital.ipb.pt:10198/4779Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:57:44.983582Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
title |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
spellingShingle |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin Graça, Nuno S. Biofuels Acetal 1,1-dibutoxyethane Simulated moving bed reactor |
title_short |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
title_full |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
title_fullStr |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
title_full_unstemmed |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
title_sort |
Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin |
author |
Graça, Nuno S. |
author_facet |
Graça, Nuno S. Pais, Luís S. Silva, Viviana M.T.M. Rodrigues, Alírio |
author_role |
author |
author2 |
Pais, Luís S. Silva, Viviana M.T.M. Rodrigues, Alírio |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Graça, Nuno S. Pais, Luís S. Silva, Viviana M.T.M. Rodrigues, Alírio |
dc.subject.por.fl_str_mv |
Biofuels Acetal 1,1-dibutoxyethane Simulated moving bed reactor |
topic |
Biofuels Acetal 1,1-dibutoxyethane Simulated moving bed reactor |
description |
The synthesis of 1,1-dibutoxyethane or acetaldehyde dibutylacetal was studied in a batch reactor by reacting butanol and acetaldehyde in a liquid phase, using Amberlyst-15 as the catalyst. The reaction equilibrium constant was experimentally determined in the temperature range 20-40 °C at 6 atm, where Ka = 0.00959 exp[1755.3/T (K)]. The standard properties of the reaction at 298.15 K were estimated: ΔH° = -14.59 kJ mol-1, ΔG° = -3.07 kJ mol-1, and ΔS° = -38.64 J mol-1 K-1. Kinetic experiments were performed in the temperature range 10-50 °C at 6 atm. A two-parameter kinetic law based on a Langmuir-Hinshelwood rate expression, using activity coefficients from the UNIFAC method, was used. The kinetic parameters are kc = 2.39 E9 exp[-6200.9/T (K)] (mol gcat -1 min-1) and ks,D = 2.25 E-4 exp[3303.1/T (K)]. The activation energy of the reaction is 51.55 kJ mol-1. This work is an important step for further implementation of an integrated reaction-separation process, such as a simulated moving-bed reactor. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010 2010-01-01T00:00:00Z 2011-05-31T11:53:19Z |
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://hdl.handle.net/10198/4779 |
url |
http://hdl.handle.net/10198/4779 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Graça, N.S.; Pais, L.S.; Silva, V.M.T.M.; Rodrigues, A.E. (2010). Oxygenated biofuels from butanol for diesel blends: synthesis of the acetal 1,1-dibutoxyethane catalyzed by amberlyst-15 Ion-exchange resin. Industrial Engineering Chemistry Research. ISSN 0888-5885. 49, p. 6763-6771. 0888-5885 10.1021/ie901635j 1520-5045 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799135193573883904 |