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

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 glyce...

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Autores principales: Gatti, Martín Nicolás, Pompeo, Francisco, Nichio, Nora Nancy, Santori, Gerardo Fabián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/160994
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-160994
record_format dspace
spelling I19-R120-10915-1609942023-12-01T20:07:03Z http://sedici.unlp.edu.ar/handle/10915/160994 Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability Gatti, Martín Nicolás Pompeo, Francisco Nichio, Nora Nancy Santori, Gerardo Fabián 2023 2023-12-01T14:25:50Z en Química biodiesel crude glycerol hydrogenolysis 1,2-propylen glycol nickel catalysts 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 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
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
spellingShingle Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
Gatti, Martín Nicolás
Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
topic_facet Química
biodiesel
crude glycerol
hydrogenolysis
1,2-propylen glycol
nickel catalysts
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%.
format Articulo
Articulo
author Gatti, Martín Nicolás
Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
author_facet Gatti, Martín Nicolás
Pompeo, Francisco
Nichio, Nora Nancy
Santori, Gerardo Fabián
author_sort Gatti, Martín Nicolás
title Crude glycerol hydrogenolysis to bio-propylene glycol: effect of its impurities on activity, selectivity and stability
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
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/160994
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AT pompeofrancisco crudeglycerolhydrogenolysistobiopropyleneglycoleffectofitsimpuritiesonactivityselectivityandstability
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