New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake.
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/7006 https://doi.org/10.1016/j.fuel.2015.02.027 |
Resumo: | In this work, an efficient heterogeneous acid catalyst for the esterification of oleic acid was prepared directly from oilseed cake by a simple sulfonation with concentrated H2SO4. Characterization by SEM/EDS, IR, Raman, TG, TG/MS, potentiometric titration showed that treatment with H2SO4 for 1, 2 and 4 h at 120 _C partially dehydrates the cake to form a carbon/cellulose composite which is sulfonated to produce strong ASO3H acidic sites. These surface sites were active for the esterification of oleic acid with yields ca. 84%, 88% and 94% in the presence of 5, 10 and 20 wt% catalyst, respectively. These results are comparable to 98% yield obtained with 1 wt% H2SO4 and higher than 75% observed for a high surface area (880 m2 g_1) sulfonated activated carbon with similar number of ASO3H active groups. These results are discussed in terms of two effects: (i) the number of sulfonic surface acidic groups and (ii) the presence of a hydrophilic cellulosic fraction in the catalyst that adsorbs/traps water formed in the reaction shifting the esterification equilibrium and improving the yield. |
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Santos, Eleonice MoreiraTeixeira, Ana Paula de CarvalhoSilva, Flávia Gontijo daCibaka, Thérèse EbambiAraújo, Maria HelenaOliveira, Willian Xerxes CoelhoMedeiros, FelipeBrasil, Alex NogueiraOliveira, Leandro Soares deLago, Rochel Montero2016-10-03T14:22:24Z2016-10-03T14:22:24Z2015SANTOS, E. M. et al. New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. Fuel Guildford, v. 150, p. 408-414, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0016236115001684>. Acesso em: 26 set. 2016.0016-2361http://www.repositorio.ufop.br/handle/123456789/7006https://doi.org/10.1016/j.fuel.2015.02.027In this work, an efficient heterogeneous acid catalyst for the esterification of oleic acid was prepared directly from oilseed cake by a simple sulfonation with concentrated H2SO4. Characterization by SEM/EDS, IR, Raman, TG, TG/MS, potentiometric titration showed that treatment with H2SO4 for 1, 2 and 4 h at 120 _C partially dehydrates the cake to form a carbon/cellulose composite which is sulfonated to produce strong ASO3H acidic sites. These surface sites were active for the esterification of oleic acid with yields ca. 84%, 88% and 94% in the presence of 5, 10 and 20 wt% catalyst, respectively. These results are comparable to 98% yield obtained with 1 wt% H2SO4 and higher than 75% observed for a high surface area (880 m2 g_1) sulfonated activated carbon with similar number of ASO3H active groups. These results are discussed in terms of two effects: (i) the number of sulfonic surface acidic groups and (ii) the presence of a hydrophilic cellulosic fraction in the catalyst that adsorbs/traps water formed in the reaction shifting the esterification equilibrium and improving the yield.O periódico Fuel concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3957611079029.info:eu-repo/semantics/openAccessAcid catalystOleic acidEsterificationBiodiesel cakeAromatizationNew heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/7006/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_New HeterogeneousCatalyst.pdfARTIGO_New HeterogeneousCatalyst.pdfapplication/pdf1458137http://www.repositorio.ufop.br/bitstream/123456789/7006/1/ARTIGO_New%20HeterogeneousCatalyst.pdff65a0fbd34db66ccc070041a5ea8ec6dMD51123456789/70062019-10-14 11:38:06.67oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-10-14T15:38:06Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
title |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
spellingShingle |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. Santos, Eleonice Moreira Acid catalyst Oleic acid Esterification Biodiesel cake Aromatization |
title_short |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
title_full |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
title_fullStr |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
title_full_unstemmed |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
title_sort |
New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. |
author |
Santos, Eleonice Moreira |
author_facet |
Santos, Eleonice Moreira Teixeira, Ana Paula de Carvalho Silva, Flávia Gontijo da Cibaka, Thérèse Ebambi Araújo, Maria Helena Oliveira, Willian Xerxes Coelho Medeiros, Felipe Brasil, Alex Nogueira Oliveira, Leandro Soares de Lago, Rochel Montero |
author_role |
author |
author2 |
Teixeira, Ana Paula de Carvalho Silva, Flávia Gontijo da Cibaka, Thérèse Ebambi Araújo, Maria Helena Oliveira, Willian Xerxes Coelho Medeiros, Felipe Brasil, Alex Nogueira Oliveira, Leandro Soares de Lago, Rochel Montero |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Santos, Eleonice Moreira Teixeira, Ana Paula de Carvalho Silva, Flávia Gontijo da Cibaka, Thérèse Ebambi Araújo, Maria Helena Oliveira, Willian Xerxes Coelho Medeiros, Felipe Brasil, Alex Nogueira Oliveira, Leandro Soares de Lago, Rochel Montero |
dc.subject.por.fl_str_mv |
Acid catalyst Oleic acid Esterification Biodiesel cake Aromatization |
topic |
Acid catalyst Oleic acid Esterification Biodiesel cake Aromatization |
description |
In this work, an efficient heterogeneous acid catalyst for the esterification of oleic acid was prepared directly from oilseed cake by a simple sulfonation with concentrated H2SO4. Characterization by SEM/EDS, IR, Raman, TG, TG/MS, potentiometric titration showed that treatment with H2SO4 for 1, 2 and 4 h at 120 _C partially dehydrates the cake to form a carbon/cellulose composite which is sulfonated to produce strong ASO3H acidic sites. These surface sites were active for the esterification of oleic acid with yields ca. 84%, 88% and 94% in the presence of 5, 10 and 20 wt% catalyst, respectively. These results are comparable to 98% yield obtained with 1 wt% H2SO4 and higher than 75% observed for a high surface area (880 m2 g_1) sulfonated activated carbon with similar number of ASO3H active groups. These results are discussed in terms of two effects: (i) the number of sulfonic surface acidic groups and (ii) the presence of a hydrophilic cellulosic fraction in the catalyst that adsorbs/traps water formed in the reaction shifting the esterification equilibrium and improving the yield. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2016-10-03T14:22:24Z |
dc.date.available.fl_str_mv |
2016-10-03T14:22:24Z |
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.citation.fl_str_mv |
SANTOS, E. M. et al. New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. Fuel Guildford, v. 150, p. 408-414, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0016236115001684>. Acesso em: 26 set. 2016. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/7006 |
dc.identifier.issn.none.fl_str_mv |
0016-2361 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/j.fuel.2015.02.027 |
identifier_str_mv |
SANTOS, E. M. et al. New heterogeneous catalyst for the esterification of fatty acid produced by surface aromatization/sulfonation of oilseed cake. Fuel Guildford, v. 150, p. 408-414, 2015. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0016236115001684>. Acesso em: 26 set. 2016. 0016-2361 |
url |
http://www.repositorio.ufop.br/handle/123456789/7006 https://doi.org/10.1016/j.fuel.2015.02.027 |
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 |
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reponame:Repositório Institucional da UFOP instname:Universidade Federal de Ouro Preto (UFOP) instacron:UFOP |
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