Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability

Autores
Gatti, Martín Nicolás; Pompeo, Francisco; Nichio, Nora Nancy; Santori, Gerardo Fabián
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The wide availability of crude glycerol and its low market price make this by-product of the biodiesel industry a promising raw material for obtaining high-value-added products through catalytic conversion processes. This work studied the effect of the composition of different industrial crude glycerol samples on the catalytic hydrogenolysis to 1,2-propylene glycol. A nickel catalyst supported on a silica–carbon composite was employed with this purpose. This catalyst proved to be active, selective to 1,2-propylene glycol and stable in the glycerol hydrogenolysis reaction in the liquid phase when analytical glycerol (99% purity) was employed. In order to determine the effect of crude glycerol composition on the activity, selectivity and stability of this catalyst, industrial crude glycerol samples were characterized by identifying and quantifying the impurities present in them (methanol, NaOH, NaCl and NaCOOH). Reaction tests were carried out with aqueous solutions of analytical glycerol, adding different impurities one by one in their respective concentration range. These results allowed for calculating activity factors starting from the ratio between the rate of glycerol consumption in the presence and in the absence of impurities. Finally, catalyst performance was evaluated employing the industrial crude glycerol samples, and a kinetic model based on the power law was proposed, which fitted the experimental results taking into account the effect of glycerol impurities. The fit allowed for predicting conversion values with an average error below 8%.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
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:10915/160994
Acceder
id SEDICI_39d9e907e143b0e21168aa7df94d9f92
oai_identifier_str oai:sedici.unlp.edu.ar:10915/160994
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stabilityGatti, Martín NicolásPompeo, FranciscoNichio, Nora NancySantori, Gerardo FabiánQuímicabiodieselcrude glycerolhydrogenolysis1,2-propylen glycolnickel catalystsThe wide availability of crude glycerol and its low market price make this by-product of the biodiesel industry a promising raw material for obtaining high-value-added products through catalytic conversion processes. This work studied the effect of the composition of different industrial crude glycerol samples on the catalytic hydrogenolysis to 1,2-propylene glycol. A nickel catalyst supported on a silica–carbon composite was employed with this purpose. This catalyst proved to be active, selective to 1,2-propylene glycol and stable in the glycerol hydrogenolysis reaction in the liquid phase when analytical glycerol (99% purity) was employed. In order to determine the effect of crude glycerol composition on the activity, selectivity and stability of this catalyst, industrial crude glycerol samples were characterized by identifying and quantifying the impurities present in them (methanol, NaOH, NaCl and NaCOOH). Reaction tests were carried out with aqueous solutions of analytical glycerol, adding different impurities one by one in their respective concentration range. These results allowed for calculating activity factors starting from the ratio between the rate of glycerol consumption in the presence and in the absence of impurities. Finally, catalyst performance was evaluated employing the industrial crude glycerol samples, and a kinetic model based on the power law was proposed, which fitted the experimental results taking into account the effect of glycerol impurities. The fit allowed for predicting conversion values with an average error below 8%.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/10915/160994enginfo:eu-repo/semantics/altIdentifier/issn/2227-9717info:eu-repo/semantics/altIdentifier/doi/10.3390/pr11061731info: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:UNLP2025-09-29T11:42:11Zoai:sedici.unlp.edu.ar:10915/160994Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:42:12.052SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
title Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
spellingShingle Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
Gatti, Martín Nicolás
Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
title_short Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
title_full Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
title_fullStr Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
title_full_unstemmed Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
title_sort Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
dc.creator.none.fl_str_mv Gatti, Martín Nicolás
Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
author Gatti, Martín Nicolás
author_facet Gatti, Martín Nicolás
Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
author_role author
author2 Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
author2_role author
author
author
dc.subject.none.fl_str_mv Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
topic Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
dc.description.none.fl_txt_mv The wide availability of crude glycerol and its low market price make this by-product of the biodiesel industry a promising raw material for obtaining high-value-added products through catalytic conversion processes. This work studied the effect of the composition of different industrial crude glycerol samples on the catalytic hydrogenolysis to 1,2-propylene glycol. A nickel catalyst supported on a silica–carbon composite was employed with this purpose. This catalyst proved to be active, selective to 1,2-propylene glycol and stable in the glycerol hydrogenolysis reaction in the liquid phase when analytical glycerol (99% purity) was employed. In order to determine the effect of crude glycerol composition on the activity, selectivity and stability of this catalyst, industrial crude glycerol samples were characterized by identifying and quantifying the impurities present in them (methanol, NaOH, NaCl and NaCOOH). Reaction tests were carried out with aqueous solutions of analytical glycerol, adding different impurities one by one in their respective concentration range. These results allowed for calculating activity factors starting from the ratio between the rate of glycerol consumption in the presence and in the absence of impurities. Finally, catalyst performance was evaluated employing the industrial crude glycerol samples, and a kinetic model based on the power law was proposed, which fitted the experimental results taking into account the effect of glycerol impurities. The fit allowed for predicting conversion values with an average error below 8%.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description The wide availability of crude glycerol and its low market price make this by-product of the biodiesel industry a promising raw material for obtaining high-value-added products through catalytic conversion processes. This work studied the effect of the composition of different industrial crude glycerol samples on the catalytic hydrogenolysis to 1,2-propylene glycol. A nickel catalyst supported on a silica–carbon composite was employed with this purpose. This catalyst proved to be active, selective to 1,2-propylene glycol and stable in the glycerol hydrogenolysis reaction in the liquid phase when analytical glycerol (99% purity) was employed. In order to determine the effect of crude glycerol composition on the activity, selectivity and stability of this catalyst, industrial crude glycerol samples were characterized by identifying and quantifying the impurities present in them (methanol, NaOH, NaCl and NaCOOH). Reaction tests were carried out with aqueous solutions of analytical glycerol, adding different impurities one by one in their respective concentration range. These results allowed for calculating activity factors starting from the ratio between the rate of glycerol consumption in the presence and in the absence of impurities. Finally, catalyst performance was evaluated employing the industrial crude glycerol samples, and a kinetic model based on the power law was proposed, which fitted the experimental results taking into account the effect of glycerol impurities. The fit allowed for predicting conversion values with an average error below 8%.
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/10915/160994
url http://sedici.unlp.edu.ar/handle/10915/160994
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2227-9717
info:eu-repo/semantics/altIdentifier/doi/10.3390/pr11061731
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
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score 13.069144

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