Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio

ilustraciones, diagramas, fotografías, planos

Autores:: Suárez Suárez, Kevin René

Tipo de recurso:

Fecha de publicación:: 2023

Institución:: Universidad Nacional de Colombia

Repositorio:: Universidad Nacional de Colombia

Idioma:: spa

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network_acronym_str	UNACIONAL2
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repository_id_str
dc.title.spa.fl_str_mv	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
dc.title.translated.eng.fl_str_mv	Obtaining furfural from coffee crop residues using iron catalytic materials supported on silicon oxide.
title	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
spellingShingle	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio 540 - Química y ciencias afines::547 - Química orgánica Catalizadores Catalisis Activación química Catalysts Catalysis Activation (Chemistry) Xilosa Sol-gel Catálisis heterogénea Furfural Biomasa Residuos de café Xylose Sol-gel Heterogeneous catalysis Furfural Biomass Coffee residues
title_short	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
title_full	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
title_fullStr	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
title_full_unstemmed	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
title_sort	Obtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicio
dc.creator.fl_str_mv	Suárez Suárez, Kevin René
dc.contributor.advisor.none.fl_str_mv	Guerrero Fajardo, Carlos Alberto Cortéz Ortiz, William Geovanni
dc.contributor.author.none.fl_str_mv	Suárez Suárez, Kevin René
dc.subject.ddc.spa.fl_str_mv	540 - Química y ciencias afines::547 - Química orgánica
topic	540 - Química y ciencias afines::547 - Química orgánica Catalizadores Catalisis Activación química Catalysts Catalysis Activation (Chemistry) Xilosa Sol-gel Catálisis heterogénea Furfural Biomasa Residuos de café Xylose Sol-gel Heterogeneous catalysis Furfural Biomass Coffee residues
dc.subject.lemb.spa.fl_str_mv	Catalizadores Catalisis Activación química
dc.subject.lemb.eng.fl_str_mv	Catalysts Catalysis Activation (Chemistry)
dc.subject.proposal.spa.fl_str_mv	Xilosa Sol-gel Catálisis heterogénea Furfural Biomasa Residuos de café
dc.subject.proposal.eng.fl_str_mv	Xylose Sol-gel Heterogeneous catalysis Furfural Biomass Coffee residues
description	ilustraciones, diagramas, fotografías, planos
publishDate	2023
dc.date.accessioned.none.fl_str_mv	2023-11-03T16:16:05Z
dc.date.available.none.fl_str_mv	2023-11-03T16:16:05Z
dc.date.issued.none.fl_str_mv	2023-11-02
dc.type.spa.fl_str_mv	Trabajo de grado - Maestría
dc.type.driver.spa.fl_str_mv	info:eu-repo/semantics/masterThesis
dc.type.version.spa.fl_str_mv	info:eu-repo/semantics/acceptedVersion
dc.type.content.spa.fl_str_mv	Text
dc.type.redcol.spa.fl_str_mv	http://purl.org/redcol/resource_type/TM
status_str	acceptedVersion
dc.identifier.uri.none.fl_str_mv	https://repositorio.unal.edu.co/handle/unal/84882
dc.identifier.instname.spa.fl_str_mv	Universidad Nacional de Colombia
dc.identifier.reponame.spa.fl_str_mv	Repositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourl.spa.fl_str_mv	https://repositorio.unal.edu.co/
url	https://repositorio.unal.edu.co/handle/unal/84882 https://repositorio.unal.edu.co/
identifier_str_mv	Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia
dc.language.iso.spa.fl_str_mv	spa
language	spa
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spelling	Atribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Guerrero Fajardo, Carlos Alberto8158c2ed082a222d8fcff4117ee21159Cortéz Ortiz, William Geovanni71d4472815e78251c6244406ddf0977aSuárez Suárez, Kevin René0d26ebebc05a49e5f9fbf34d343a4e7d2023-11-03T16:16:05Z2023-11-03T16:16:05Z2023-11-02https://repositorio.unal.edu.co/handle/unal/84882Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, diagramas, fotografías, planosLa industria cafetera en Colombia genera grandes cantidades de biomasa residual, la cual puede ser aprovechada en procesos de biorrefinería como por ejemplo la obtención de moléculas plataforma de alto valor agregado. En el presente estudio se evaluó la posibilidad de implementar residuos del cultivo de café en la producción de moléculas plataforma de alto valor agregado como el furfural a partir de materiales catalíticos de hierro soportado en óxido de silicio (Fe/SiO2) sintetizados por el método sol-gel. Se resalta que hasta la fecha no se reporta en la literatura la producción de furfural a partir de la cereza residual del café. Para la producción de furfural se utilizaron cuatro materiales catalíticos con cargas de 0,5 y 1,5 % de hierro calcinados a dos temperaturas diferentes, 450 y 750 °C. Como hipótesis se mantiene que la biomasa seleccionada cuenta con los carbohidratos estructurales suficientes para ser implementados en la producción de la molécula plataforma de interés, además de esto, se considera que los materiales catalíticos son activos y selectivos en la obtención de furfural. Los catalizadores fueron evaluados inicialmente con patrones de xilosa con concentración de 3,0 g por L de agua. Se determinó que el catalizador con mayor carga de hierro y calcinado a 750 °C presenta mayor conversión (54,76 %) y selectividad (40,09 %) hacia furfural. Posteriormente, empleando la cereza del café se aplicaron tratamientos de hidrólisis hidrotermal a 170 y 190 °C por 30 y 60 min. Los hidrolizados resultantes fueron implementados en la producción de furfural a 170 °C por 2 horas, en un reactor de diseño propio con atmósfera inerte, usando el catalizador que presenta mayor selectividad obteniendo 9,26 mg de furfural por g de cereza de café. Las condiciones de reacción fueron determinadas tomando en cuenta lo reportado en múltiples estudios. La evaluación del efecto de la temperatura, tiempo en el proceso y carga del metal de transición no fueron evaluadas ya que la cantidad disponible de catalizador era limitada y su síntesis es un proceso altamente costoso. Se destaca que, la actividad catalítica de los materiales de hierro se debe a la presencia de centros activos (ácidos de Lewis) correspondientes a Fe3+ los cuales promueven la isomerización de la xilosa a xilulosa, facilitando la deshidratación de la pentosa para la formación de furfural. Se concluye que el catalizador es activo y selectivo en el proceso de obtención furfural, a partir de residuos de cultivo café como precursor de moléculas de alto valor agregado como el furfural. (Texto tomado de la fuente)The coffee industry in Colombia generates large amounts of residual biomass, which can be used in biorefinery processes such as obtaining high value-added platform molecules. In the present study, the possibility of implementing coffee crop residues in the production of high value-added platform molecules such as furfural from iron catalytic materials supported on silicon oxide (Fe/SiO2) synthesized by the sol-gel method was evaluated. It should be noted that to date, the production of furfural from residual coffee cherry has not been reported in the literature. For the production of furfural, four catalytic materials with loadings of 0.5 and 1.5 % iron calcined at two different temperatures, 450 and 750 °C, were used. As a hypothesis it is maintained that the selected biomass has sufficient structural carbohydrates to be implemented in the production of the platform molecule of interest, in addition to this, it is considered that the catalytic materials are active and selective in obtaining furfural. The catalysts were initially evaluated with xylose standards with a concentration of 3.0 g per L of water. It was determined that the catalyst with higher iron loading and calcined at 750 °C presented higher conversion (54.76 %) and selectivity (40.09 %) towards furfural. Subsequently, using coffee cherry, hydrothermal hydrolysis treatments at 170 and 190 °C for 30 and 60 min were applied. The resulting hydrolysates were implemented in the production of furfural at 170 °C for 2 h, in a reactor of our own design with inert atmosphere, using the catalyst that presents greater selectivity, obtaining 9.26 mg of furfural per g of coffee cherry. The reaction conditions were determined taking into account those reported in multiple studies. The effect of temperature, time in the process and transition metal loading was not evaluated, since the available amount of catalyst was limited and its synthesis is a highly expensive process. It is highlighted that the catalytic activity of the iron materials is due to the presence of active centers (Lewis acids) corresponding to Fe3+ which promote the isomerization of xylose to xylulose, facilitating the dehydration of the pentose for the formation of furfural. It is concluded that the catalyst is active and selective in the process of obtaining furfural from coffee crop residues as a precursor of high value-added molecules such as furfural.MaestríaMagíster en Ciencias - QuímicaGrupo de investigación Aprovechamiento Energético de Recursos Naturales –APRENA-xxi, 115 páginasapplication/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - QuímicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá540 - Química y ciencias afines::547 - Química orgánicaCatalizadoresCatalisisActivación químicaCatalystsCatalysisActivation (Chemistry)XilosaSol-gelCatálisis heterogéneaFurfuralBiomasaResiduos de caféXyloseSol-gelHeterogeneous catalysisFurfuralBiomassCoffee residuesObtención de furfural a partir de residuos del cultivo de café empleando materiales catalíticos de hierro soportado en óxido de silicioObtaining furfural from coffee crop residues using iron catalytic materials supported on silicon oxide.Trabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TM[1] Organización Internacional del Café, “Informe de la OIC sobre desarrollo cafetero de 2019 Sumario,” 2019.[2] D. 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