Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5

Detalhes bibliográficos
Autor(a) principal: Machado, Sara A.
Data de Publicação: 2022
Outros Autores: Reis, Cristiano E. Rodrigues, Bento, Heitor B. S. [UNESP], Carvalho, Ana K. F., Costa-Silva, Tales A., Conceição, Leyvison Rafael V. da, Giordani, Domingos S., Castro, Heizir F. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1080/17597269.2022.2071064
http://hdl.handle.net/11449/240322
Resumo: An approach to producing biodiesel is the esterification of free fatty acids with an acyl acceptor. Free fatty acids can be produced through the hydrolysis of acylglycerols and represent a somewhat challenging feedstock for the production of biodiesel due to slower kinetics and the production of water in the reaction. The purpose of this work was to demonstrate the feasibility of a Keggin-structured heteropolyacid, H3PW12O40 (HPW) supported onto Nb2O5 to be used as a catalyst for the reaction of free fatty acids with ethanol to produce ethyl esters that comply with biodiesel norm values. The use of heteropolyacids as heterogeneous catalysts may present advantageous operational benefits, including the tolerance to residual water present in the medium and the potential for reusability. The catalyst was prepared via impregnation of HPW onto Nb2O5 and was characterized in terms of acidity and surface properties. The enzymatic hydrolysis of macaw palm oil yielded a feedstock containing a free fatty acid content greater than 93%. The hydrolysate was assessed as a reactant for the esterification reaction, evaluating temperature, molar ratio, and catalyst amount, leading to optimal conversions greater than 99% with viscosity and density within the regulatory limits for biodiesel. The use of heterogeneous acid catalysts, such as HPW/Nb2O5, represents a potentially feasible alternative to unlocking the potential of working with challenging feedstocks as oil hydrolysates.
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spelling Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5Biodieselesterificationheteropolyacidmacaw palm oilniobiaAn approach to producing biodiesel is the esterification of free fatty acids with an acyl acceptor. Free fatty acids can be produced through the hydrolysis of acylglycerols and represent a somewhat challenging feedstock for the production of biodiesel due to slower kinetics and the production of water in the reaction. The purpose of this work was to demonstrate the feasibility of a Keggin-structured heteropolyacid, H3PW12O40 (HPW) supported onto Nb2O5 to be used as a catalyst for the reaction of free fatty acids with ethanol to produce ethyl esters that comply with biodiesel norm values. The use of heteropolyacids as heterogeneous catalysts may present advantageous operational benefits, including the tolerance to residual water present in the medium and the potential for reusability. The catalyst was prepared via impregnation of HPW onto Nb2O5 and was characterized in terms of acidity and surface properties. The enzymatic hydrolysis of macaw palm oil yielded a feedstock containing a free fatty acid content greater than 93%. The hydrolysate was assessed as a reactant for the esterification reaction, evaluating temperature, molar ratio, and catalyst amount, leading to optimal conversions greater than 99% with viscosity and density within the regulatory limits for biodiesel. The use of heterogeneous acid catalysts, such as HPW/Nb2O5, represents a potentially feasible alternative to unlocking the potential of working with challenging feedstocks as oil hydrolysates.Engineering School of Lorena University of São Paulo, São PauloEART H UniversitySchool of Pharmaceutical Sciences São Paulo State UniversityPostgraduate Program in Biotechnology Institute of Chemistry Federal University of AlfenasFaculty of Pharmaceutical Sciences University of São PauloInstitute of Exact and Natural Sciences Federal University of ParáSchool of Pharmaceutical Sciences São Paulo State UniversityUniversidade de São Paulo (USP)EART H UniversityUniversidade Estadual Paulista (UNESP)Federal University of AlfenasUniversidade Federal do Pará (UFPA)Machado, Sara A.Reis, Cristiano E. RodriguesBento, Heitor B. S. [UNESP]Carvalho, Ana K. F.Costa-Silva, Tales A.Conceição, Leyvison Rafael V. daGiordani, Domingos S.Castro, Heizir F. de2023-03-01T20:11:49Z2023-03-01T20:11:49Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1021-1029http://dx.doi.org/10.1080/17597269.2022.2071064Biofuels, v. 13, n. 8, p. 1021-1029, 2022.1759-72771759-7269http://hdl.handle.net/11449/24032210.1080/17597269.2022.20710642-s2.0-85132649636Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBiofuelsinfo:eu-repo/semantics/openAccess2023-03-01T20:11:49Zoai:repositorio.unesp.br:11449/240322Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:14:47.429274Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
title Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
spellingShingle Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
Machado, Sara A.
Biodiesel
esterification
heteropolyacid
macaw palm oil
niobia
title_short Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
title_full Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
title_fullStr Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
title_full_unstemmed Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
title_sort Esterification of enzymatically treated macaw palm oil catalyzed by heteropolyacid supported onto Nb2O5
author Machado, Sara A.
author_facet Machado, Sara A.
Reis, Cristiano E. Rodrigues
Bento, Heitor B. S. [UNESP]
Carvalho, Ana K. F.
Costa-Silva, Tales A.
Conceição, Leyvison Rafael V. da
Giordani, Domingos S.
Castro, Heizir F. de
author_role author
author2 Reis, Cristiano E. Rodrigues
Bento, Heitor B. S. [UNESP]
Carvalho, Ana K. F.
Costa-Silva, Tales A.
Conceição, Leyvison Rafael V. da
Giordani, Domingos S.
Castro, Heizir F. de
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
EART H University
Universidade Estadual Paulista (UNESP)
Federal University of Alfenas
Universidade Federal do Pará (UFPA)
dc.contributor.author.fl_str_mv Machado, Sara A.
Reis, Cristiano E. Rodrigues
Bento, Heitor B. S. [UNESP]
Carvalho, Ana K. F.
Costa-Silva, Tales A.
Conceição, Leyvison Rafael V. da
Giordani, Domingos S.
Castro, Heizir F. de
dc.subject.por.fl_str_mv Biodiesel
esterification
heteropolyacid
macaw palm oil
niobia
topic Biodiesel
esterification
heteropolyacid
macaw palm oil
niobia
description An approach to producing biodiesel is the esterification of free fatty acids with an acyl acceptor. Free fatty acids can be produced through the hydrolysis of acylglycerols and represent a somewhat challenging feedstock for the production of biodiesel due to slower kinetics and the production of water in the reaction. The purpose of this work was to demonstrate the feasibility of a Keggin-structured heteropolyacid, H3PW12O40 (HPW) supported onto Nb2O5 to be used as a catalyst for the reaction of free fatty acids with ethanol to produce ethyl esters that comply with biodiesel norm values. The use of heteropolyacids as heterogeneous catalysts may present advantageous operational benefits, including the tolerance to residual water present in the medium and the potential for reusability. The catalyst was prepared via impregnation of HPW onto Nb2O5 and was characterized in terms of acidity and surface properties. The enzymatic hydrolysis of macaw palm oil yielded a feedstock containing a free fatty acid content greater than 93%. The hydrolysate was assessed as a reactant for the esterification reaction, evaluating temperature, molar ratio, and catalyst amount, leading to optimal conversions greater than 99% with viscosity and density within the regulatory limits for biodiesel. The use of heterogeneous acid catalysts, such as HPW/Nb2O5, represents a potentially feasible alternative to unlocking the potential of working with challenging feedstocks as oil hydrolysates.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
2023-03-01T20:11:49Z
2023-03-01T20:11:49Z
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/10.1080/17597269.2022.2071064
Biofuels, v. 13, n. 8, p. 1021-1029, 2022.
1759-7277
1759-7269
http://hdl.handle.net/11449/240322
10.1080/17597269.2022.2071064
2-s2.0-85132649636
url http://dx.doi.org/10.1080/17597269.2022.2071064
http://hdl.handle.net/11449/240322
identifier_str_mv Biofuels, v. 13, n. 8, p. 1021-1029, 2022.
1759-7277
1759-7269
10.1080/17597269.2022.2071064
2-s2.0-85132649636
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Biofuels
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1021-1029
dc.source.none.fl_str_mv Scopus
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
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