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

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 We...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Mateos, Paula Stefanía, Ruscitti, Claudia, Casella, Mónica Laura, Matkovic, Silvana Raquel, Briand, Laura Estefanía
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Química
Wells-Dawson
HPA
esterification
WCO
transesterification
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/159920
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-159920
record_format dspace
spelling I19-R120-10915-1599202023-11-08T20:07:31Z http://sedici.unlp.edu.ar/handle/10915/159920 Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil Mateos, Paula Stefanía Ruscitti, Claudia Casella, Mónica Laura Matkovic, Silvana Raquel Briand, Laura Estefanía 2023 2023-11-08T13:21:35Z en Química Wells-Dawson HPA esterification WCO transesterification 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 Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Wells-Dawson
HPA
esterification
WCO
transesterification
spellingShingle Química
Wells-Dawson
HPA
esterification
WCO
transesterification
Mateos, Paula Stefanía
Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
topic_facet Química
Wells-Dawson
HPA
esterification
WCO
transesterification
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.
format Articulo
Articulo
author Mateos, Paula Stefanía
Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
author_facet Mateos, Paula Stefanía
Ruscitti, Claudia
Casella, Mónica Laura
Matkovic, Silvana Raquel
Briand, Laura Estefanía
author_sort Mateos, Paula Stefanía
title Phosphotungstic Wells-Dawson Heteropolyacid as Potential Catalyst in the Transesterification of Waste Cooking Oil
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
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/159920
work_keys_str_mv AT mateospaulastefania phosphotungsticwellsdawsonheteropolyacidaspotentialcatalystinthetransesterificationofwastecookingoil
AT ruscitticlaudia phosphotungsticwellsdawsonheteropolyacidaspotentialcatalystinthetransesterificationofwastecookingoil
AT casellamonicalaura phosphotungsticwellsdawsonheteropolyacidaspotentialcatalystinthetransesterificationofwastecookingoil
AT matkovicsilvanaraquel phosphotungsticwellsdawsonheteropolyacidaspotentialcatalystinthetransesterificationofwastecookingoil
AT briandlauraestefania phosphotungsticwellsdawsonheteropolyacidaspotentialcatalystinthetransesterificationofwastecookingoil
_version_ 1807221791407472640

Ejemplares similares