Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil

Autores
Mateos, Paula Stefanía; Ruscitti, Claudia; Casella, Mónica Laura; Matkovic, Silvana Raquel; Briand, Laura Estefanía
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The esterification of oleic acid was applied in order to screen the suitability of a series of phosphotungstic-basedWells-Dawson types of compounds as potential catalysts in the heterogeneous transesterification of sunflower waste cooking oil. This test reaction indicated that the phosphotungstic Wells- Dawson heteropolyacid H₆P₂W₁₈O₆₂ xH₂O, dispersed on titania oxide in a loading of 15 mg per m² of oxide support (named 42% HPA/TiO₂) and possessing exclusively Brønsted acid sites, was the most promising among the screened materials. In addition, the application of a nonlinear analysis methodology to find a surface that fits the specific activity of the oleic acid esterification with methanol at various temperatures, weights of catalyst, molar ratios of substrates, and stirring speeds, and also considering the active phase desorption out of the catalyst’s surface, allowed determining the optimum operative conditions that were applied in the transesterification of the waste cooking oil afterwards. The transesterification of the waste cooking oil at 60 C and 1:9 WCO: methanol molar ratio in a batch reactor under stirring at 650 rpm for 3 h, catalyzed with 0.25 wt% of 42% HPA/TiO₂ (20.0 g of oil and 49.6 mg of catalyst), presents 74.6% of conversion of glycerides and 74.4% yield towards fatty acid methyl esters. The catalyst was recovered and reused several times, maintaining a fairly constant catalytic performance.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
Wells-Dawson
HPA
esterification
WCO
transesterification
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/159920
Acceder
id SEDICI_13ad6c9d02309c7ffa43a34ed30f8ba9
oai_identifier_str oai:sedici.unlp.edu.ar:10915/159920
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking OilMateos, Paula StefaníaRuscitti, ClaudiaCasella, Mónica LauraMatkovic, Silvana RaquelBriand, Laura EstefaníaQuímicaWells-DawsonHPAesterificationWCOtransesterificationThe esterification of oleic acid was applied in order to screen the suitability of a series of phosphotungstic-basedWells-Dawson types of compounds as potential catalysts in the heterogeneous transesterification of sunflower waste cooking oil. This test reaction indicated that the phosphotungstic Wells- Dawson heteropolyacid H₆P₂W₁₈O₆₂ xH₂O, dispersed on titania oxide in a loading of 15 mg per m² of oxide support (named 42% HPA/TiO₂) and possessing exclusively Brønsted acid sites, was the most promising among the screened materials. In addition, the application of a nonlinear analysis methodology to find a surface that fits the specific activity of the oleic acid esterification with methanol at various temperatures, weights of catalyst, molar ratios of substrates, and stirring speeds, and also considering the active phase desorption out of the catalyst’s surface, allowed determining the optimum operative conditions that were applied in the transesterification of the waste cooking oil afterwards. The transesterification of the waste cooking oil at 60 C and 1:9 WCO: methanol molar ratio in a batch reactor under stirring at 650 rpm for 3 h, catalyzed with 0.25 wt% of 42% HPA/TiO₂ (20.0 g of oil and 49.6 mg of catalyst), presents 74.6% of conversion of glycerides and 74.4% yield towards fatty acid methyl esters. The catalyst was recovered and reused several times, maintaining a fairly constant catalytic performance.Centro de Investigación y Desarrollo en Ciencias Aplicadas2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/159920enginfo:eu-repo/semantics/altIdentifier/issn/2073-4344info:eu-repo/semantics/altIdentifier/doi/10.3390/catal13091253info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:41:51Zoai:sedici.unlp.edu.ar:10915/159920Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:41:51.623SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
title Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
spellingShingle Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
Mateos, Paula Stefanía
Química
Wells-Dawson
HPA
esterification
WCO
transesterification
title_short Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
title_full Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
title_fullStr Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
title_full_unstemmed Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
title_sort Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
dc.creator.none.fl_str_mv Mateos, Paula Stefanía
Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
author Mateos, Paula Stefanía
author_facet Mateos, Paula Stefanía
Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
author_role author
author2 Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
author2_role author
author
author
author
dc.subject.none.fl_str_mv Química
Wells-Dawson
HPA
esterification
WCO
transesterification
topic Química
Wells-Dawson
HPA
esterification
WCO
transesterification
dc.description.none.fl_txt_mv The esterification of oleic acid was applied in order to screen the suitability of a series of phosphotungstic-basedWells-Dawson types of compounds as potential catalysts in the heterogeneous transesterification of sunflower waste cooking oil. This test reaction indicated that the phosphotungstic Wells- Dawson heteropolyacid H₆P₂W₁₈O₆₂ xH₂O, dispersed on titania oxide in a loading of 15 mg per m² of oxide support (named 42% HPA/TiO₂) and possessing exclusively Brønsted acid sites, was the most promising among the screened materials. In addition, the application of a nonlinear analysis methodology to find a surface that fits the specific activity of the oleic acid esterification with methanol at various temperatures, weights of catalyst, molar ratios of substrates, and stirring speeds, and also considering the active phase desorption out of the catalyst’s surface, allowed determining the optimum operative conditions that were applied in the transesterification of the waste cooking oil afterwards. The transesterification of the waste cooking oil at 60 C and 1:9 WCO: methanol molar ratio in a batch reactor under stirring at 650 rpm for 3 h, catalyzed with 0.25 wt% of 42% HPA/TiO₂ (20.0 g of oil and 49.6 mg of catalyst), presents 74.6% of conversion of glycerides and 74.4% yield towards fatty acid methyl esters. The catalyst was recovered and reused several times, maintaining a fairly constant catalytic performance.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description The esterification of oleic acid was applied in order to screen the suitability of a series of phosphotungstic-basedWells-Dawson types of compounds as potential catalysts in the heterogeneous transesterification of sunflower waste cooking oil. This test reaction indicated that the phosphotungstic Wells- Dawson heteropolyacid H₆P₂W₁₈O₆₂ xH₂O, dispersed on titania oxide in a loading of 15 mg per m² of oxide support (named 42% HPA/TiO₂) and possessing exclusively Brønsted acid sites, was the most promising among the screened materials. In addition, the application of a nonlinear analysis methodology to find a surface that fits the specific activity of the oleic acid esterification with methanol at various temperatures, weights of catalyst, molar ratios of substrates, and stirring speeds, and also considering the active phase desorption out of the catalyst’s surface, allowed determining the optimum operative conditions that were applied in the transesterification of the waste cooking oil afterwards. The transesterification of the waste cooking oil at 60 C and 1:9 WCO: methanol molar ratio in a batch reactor under stirring at 650 rpm for 3 h, catalyzed with 0.25 wt% of 42% HPA/TiO₂ (20.0 g of oil and 49.6 mg of catalyst), presents 74.6% of conversion of glycerides and 74.4% yield towards fatty acid methyl esters. The catalyst was recovered and reused several times, maintaining a fairly constant catalytic performance.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/159920
url http://sedici.unlp.edu.ar/handle/10915/159920
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2073-4344
info:eu-repo/semantics/altIdentifier/doi/10.3390/catal13091253
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616289406943232
score 13.070432

Publicaciones similares