Articles producció científica> Química Física i Inorgànica

Use of biobased crude glycerol, obtained biocatalytically, to obtain biofuel additives by catalytic acetalization of furfural using SAPO catalysts

  • Datos identificativos

    Identificador: imarina:9247335
    Handle: https://hdl.handle.net/20.500.11797/imarina9247335
    Autores:
    Guerrero-Ruíz FYara-Varón EDolores González MTorres MSalagre PCanela-Garayoa RCesteros Y
    Resumen:
    High-pure crude glycerol, obtained from the transesterification of coconut oil with ethanol using lipase enzyme-type as biocatalyst, has been used for the acetalization of furfural with several SAPO 5 and SAPO 34 catalysts. SAPOs were prepared using microwaves and conventional heating for comparison, and were characterized by X-ray diffraction, nitrogen physisorption, elemental analysis, thermogravimetry of adsorbed cyclohexylamine and scanning electron microscopy techniques. The use of microwaves allowed us the incorporation of slightly higher amounts of silicon into the aluminophosphate structure, and the preparation of the materials in much shorter preparation times, with the subsequent energy saving. Additionally, the SAPOs prepared with microwaves showed lower crystallinity but higher surface area than those prepared by conventional heating. Comparable catalytic results were obtained when these catalysts were tested for the acetalization of furfural with commercial or with the crude glycerol obtained by biocatalytic transesterification of coconut oil, leading to very high selectivity values to the desired mixture dioxane + dioxolane (93–100 %), which can be used as biofuel additives, for conversion values between 60 and 73 %, as determined by gas chromatography. This confirmed the high purity of the glycerol obtained by the biocatalytical process, as previously observed by 1H NMR. SAPO 34 catalysts showed higher conversion than SAPO 5 catalysts due to their higher amount of more accessible Brønsted acid sites, related to their structure. Interestingly, catalysts prepared with microwaves resulted in slightly higher conversion values than those prepared by conventional heating. This can be explained by the incorporation of higher amounts of silicon in the framework,

  • Otros:

    Autor según el artículo: Guerrero-Ruíz F; Yara-Varón E; Dolores González M; Torres M; Salagre P; Canela-Garayoa R; Cesteros Y
    Departamento: Química Física i Inorgànica
    Autor/es de la URV: Cesteros Fernández, Yolanda / González Candela, Maria Dolores / Guerrero Ruiz, Federico / Salagre Carnero, María Pilar
    Palabras clave: Sapo Microwaves Immobilised lipase Furfural Crude glycerol Catalytic acetalization Biofuel additives
    Resumen: High-pure crude glycerol, obtained from the transesterification of coconut oil with ethanol using lipase enzyme-type as biocatalyst, has been used for the acetalization of furfural with several SAPO 5 and SAPO 34 catalysts. SAPOs were prepared using microwaves and conventional heating for comparison, and were characterized by X-ray diffraction, nitrogen physisorption, elemental analysis, thermogravimetry of adsorbed cyclohexylamine and scanning electron microscopy techniques. The use of microwaves allowed us the incorporation of slightly higher amounts of silicon into the aluminophosphate structure, and the preparation of the materials in much shorter preparation times, with the subsequent energy saving. Additionally, the SAPOs prepared with microwaves showed lower crystallinity but higher surface area than those prepared by conventional heating. Comparable catalytic results were obtained when these catalysts were tested for the acetalization of furfural with commercial or with the crude glycerol obtained by biocatalytic transesterification of coconut oil, leading to very high selectivity values to the desired mixture dioxane + dioxolane (93–100 %), which can be used as biofuel additives, for conversion values between 60 and 73 %, as determined by gas chromatography. This confirmed the high purity of the glycerol obtained by the biocatalytical process, as previously observed by 1H NMR. SAPO 34 catalysts showed higher conversion than SAPO 5 catalysts due to their higher amount of more accessible Brønsted acid sites, related to their structure. Interestingly, catalysts prepared with microwaves resulted in slightly higher conversion values than those prepared by conventional heating. This can be explained by the incorporation of higher amounts of silicon in the framework, probably due to the higher homogeneity of the microwaves heating, which results in a higher amount of protons, as confirmed by TGA of adsorbed cyclohexylamine, responsible for the catalysis.
    Áreas temáticas: Saúde coletiva Química Organic chemistry Odontología Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências General chemical engineering Fuel technology Farmacia Ensino Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Energy engineering and power technology Energy & fuels Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Biodiversidade Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: federico.guerrero@estudiants.urv.cat federico.guerrero@estudiants.urv.cat yolanda.cesteros@urv.cat
    Identificador del autor: 0000-0001-7163-4068 0000-0001-7163-4068 0000-0002-5439-9358
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0016236122006652
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Fuel. 319 123803-
    Referencia de l'ítem segons les normes APA: Guerrero-Ruíz F; Yara-Varón E; Dolores González M; Torres M; Salagre P; Canela-Garayoa R; Cesteros Y (2022). Use of biobased crude glycerol, obtained biocatalytically, to obtain biofuel additives by catalytic acetalization of furfural using SAPO catalysts. Fuel, 319(), 123803-. DOI: 10.1016/j.fuel.2022.123803
    DOI del artículo: 10.1016/j.fuel.2022.123803
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2022
    Tipo de publicación: Journal Publications

  • Palabras clave:

    Chemical Engineering (Miscellaneous),Energy & Fuels,Energy Engineering and Power Technology,Engineering, Chemical,Fuel Technology,Organic Chemistry
    Sapo
    Microwaves
    Immobilised lipase
    Furfural
    Crude glycerol
    Catalytic acetalization
    Biofuel additives
    Saúde coletiva
    Química
    Organic chemistry
    Odontología
    Medicina i
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geociências
    General chemical engineering
    Fuel technology
    Farmacia
    Ensino
    Engineering, chemical
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Energy engineering and power technology
    Energy & fuels
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Chemical engineering (miscellaneous)
    Chemical engineering (all)
    Biotecnología
    Biodiversidade
    Astronomia / física

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