Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol
ilustraciones, diagramas, mapas
- Autores:
-
Villegas Bolaños, Paola Andrea
- Tipo de recurso:
- Doctoral thesis
- Fecha de publicación:
- 2020
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/83790
- Palabra clave:
- 540 - Química y ciencias afines::549 - Mineralogía
660 - Ingeniería química::661 - Tecnología de químicos industriales
620 - Ingeniería y operaciones afines::622 - Minería y operaciones relacionadas
Rocas metamórficas
Catálisis
Rocks, metamorphic
Catalysis
Olivino
Geocatálisis
Reformado con vapor
Valorización de glicerol
Plasma no térmico
Olivine
Geocatalyst
Steam reforming
Glicerol valorization
Non-termal plasma
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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| dc.title.spa.fl_str_mv |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| dc.title.translated.eng.fl_str_mv |
Evaluation of the catalytic activity of a sample of Dunite from Medellín in the generation of value-added products from glycerol |
| title |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| spellingShingle |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol 540 - Química y ciencias afines::549 - Mineralogía 660 - Ingeniería química::661 - Tecnología de químicos industriales 620 - Ingeniería y operaciones afines::622 - Minería y operaciones relacionadas Rocas metamórficas Catálisis Rocks, metamorphic Catalysis Olivino Geocatálisis Reformado con vapor Valorización de glicerol Plasma no térmico Olivine Geocatalyst Steam reforming Glicerol valorization Non-termal plasma |
| title_short |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| title_full |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| title_fullStr |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| title_full_unstemmed |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| title_sort |
Evaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerol |
| dc.creator.fl_str_mv |
Villegas Bolaños, Paola Andrea |
| dc.contributor.advisor.none.fl_str_mv |
Dorkis, Ludovic Márquez Godoy, Marco Antonio |
| dc.contributor.author.none.fl_str_mv |
Villegas Bolaños, Paola Andrea |
| dc.contributor.researchgroup.spa.fl_str_mv |
Grupo de Mineralogía Aplicada y Bioprocesos (Gmab) Grupo de Investigación en Catálisis y Nanomateriales |
| dc.contributor.orcid.spa.fl_str_mv |
Paola Andrea, Villegas-Bolaños [0000-0001-8697-8736] Dorkis, Ludovic [0000-0003-2113-3542] Márquez Godoy, Marco Antonio [0000-0002-7462-2430] |
| dc.contributor.cvlac.spa.fl_str_mv |
Villegas Bolaños Paola Andrea |
| dc.contributor.googlescholar.spa.fl_str_mv |
PAOLA ANDREA VILLEGAS BOLAÑOS |
| dc.subject.ddc.spa.fl_str_mv |
540 - Química y ciencias afines::549 - Mineralogía 660 - Ingeniería química::661 - Tecnología de químicos industriales 620 - Ingeniería y operaciones afines::622 - Minería y operaciones relacionadas |
| topic |
540 - Química y ciencias afines::549 - Mineralogía 660 - Ingeniería química::661 - Tecnología de químicos industriales 620 - Ingeniería y operaciones afines::622 - Minería y operaciones relacionadas Rocas metamórficas Catálisis Rocks, metamorphic Catalysis Olivino Geocatálisis Reformado con vapor Valorización de glicerol Plasma no térmico Olivine Geocatalyst Steam reforming Glicerol valorization Non-termal plasma |
| dc.subject.lemb.spa.fl_str_mv |
Rocas metamórficas Catálisis |
| dc.subject.lemb.eng.fl_str_mv |
Rocks, metamorphic Catalysis |
| dc.subject.proposal.spa.fl_str_mv |
Olivino Geocatálisis Reformado con vapor Valorización de glicerol Plasma no térmico |
| dc.subject.proposal.eng.fl_str_mv |
Olivine Geocatalyst Steam reforming Glicerol valorization Non-termal plasma |
| description |
ilustraciones, diagramas, mapas |
| publishDate |
2020 |
| dc.date.issued.none.fl_str_mv |
2020-04-20 |
| dc.date.accessioned.none.fl_str_mv |
2023-04-26T14:09:32Z |
| dc.date.available.none.fl_str_mv |
2023-04-26T14:09:32Z |
| dc.type.spa.fl_str_mv |
Trabajo de grado - Doctorado |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
| dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
| dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_db06 |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TD |
| format |
http://purl.org/coar/resource_type/c_db06 |
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acceptedVersion |
| dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/83790 |
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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/83790 https://repositorio.unal.edu.co/ |
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Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
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spa |
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spa |
| dc.relation.references.spa.fl_str_mv |
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THEOCHEM, vol. 942, núm. 1–3, pp. 38–42, 2010, doi: 10.1016/j.theochem.2009.11.030. M. García-Melchor y N. López, “Homolytic products from heterolytic paths in H2 dissociation on metal oxides: The example of CeO2”, J. Phys. Chem. C, vol. 118, núm. 20, pp. 10921–10926, 2014, doi: 10.1021/jp502309r |
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Atribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Dorkis, Ludovic504f9ecf39ae065dbf8b599effac24cd600Márquez Godoy, Marco Antoniod4e253d07a48cb9652fd6c366cf4c910600Villegas Bolaños, Paola Andrea3f5cae4fd232081c47b7bdc748d4786bGrupo de Mineralogía Aplicada y Bioprocesos (Gmab)Grupo de Investigación en Catálisis y NanomaterialesPaola Andrea, Villegas-Bolaños [0000-0001-8697-8736]Dorkis, Ludovic [0000-0003-2113-3542]Márquez Godoy, Marco Antonio [0000-0002-7462-2430]Villegas Bolaños Paola AndreaPAOLA ANDREA VILLEGAS BOLAÑOS2023-04-26T14:09:32Z2023-04-26T14:09:32Z2020-04-20https://repositorio.unal.edu.co/handle/unal/83790Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, diagramas, mapasEl potencial catalítico de la dunita de Medellín calcinada a 1200°C y reducida a 900°C fue evaluado mediante dos técnicas catalíticas: el reformado de glicerol con vapor convencional y mediante el acoplamiento a plasma no térmico (NTP). En el método convencional se encontró que la presencia de la dunita de Medellín calcinada incrementa la conversión de glicerol de 58%, sin catalizador, a 97% a 600°C, y facilita la generación de gas de síntesis con una relación de H2/CO de 1.1 y 1.5 con temperaturas de reacción de 700° y 800°C respectivamente, con conversión de glicerol del 100% y sin depósitos de coque, favoreciendo la producción de H2 y CO2 con bajos contenidos de CH4. La temperatura de reacción determinó la formación de productos en fase líquida a 600°C, con tendencia a la formación de productos de deshidrogenación del glicerol, especialmente por el hidroxilo terminal. En cuanto al reformado de glicerol con vapor acoplado a plasma no térmico, se encontró que se formó una atmósfera oxidativa en el proceso de descomposición del glicerol y que este proceso podría llevarse a cabo vía radicales OH. La deshidrogenación inducida por el mineral calcinado acoplado a NTP se desarrolló principalmente sobre el hidroxilo secundario. Bajo condiciones de reacción de 200°C, 0.8 W de potencia, 3 kHz de frecuencia y un volumen activo de 0.55 cm3, se obtuvo dihidroxiacetona, ácido succínico y ácido fórmico con selectividades de 14%, 14% y 8.2% respectivamente, con una conversión de glicerol de 52%, mientras que las selectividades obtenidas sin catalizador fueron menores al 6%. Finalmente, este estudio permitió establecer que es posible generar un geocatalizador a partir de la dunita de Medellín bajo las condiciones empleadas en este trabajo, para el reformado de glicerol con vapor por catálisis convencional o acoplada a plasma no térmico, siendo estas alternativas viables e interesantes para la valorización del glicerol hacia productos en fase gaseosa o líquida. Sin embargo, es necesario establecer condiciones óptimas para la obtención de gas de síntesis y/o de los productos condensados mencionados. Además, es importante plantear estudios centrados en dilucidar los mecanismos por los cuales los compuestos de Fe activos en el mineral calcinado (hematita, olivino y magnetita) desempeñan su rol en la descomposición del glicerol, con el objetivo de mejorar el geocatalizador y hacerlo más selectivo, aprovechando la capacidad del material para mitigar los depósitos de coque, característica observada mediante catálisis convencional. (Texto tomado de la fuente)The catalytic potential of the calcined dunite from Medellin was evaluated by two catalytic techniques, one of them, the conventional decomposition of glycerol by steam reforming, and the other, by non-thermal plasma (NTP) coupling. In conventional catalysis, it was found that the presence of calcined dunite from Medellin increases the conversion of glycerol from 58%, without catalyst, to 97% at 600°C, and facilitates the generation of synthesis gas with an H2/CO ratio of 1.1 and 1.5 (reaction temperatures of 700°C and 800°C respectively), with 100% glycerol conversion and no coke deposits, favoring the production of H2 and CO2 with low CH4 contents. The reaction temperature determined the formation of liquid phase products at 600°C, with a tendency to the formation of glycerol dehydrogenation products, especially by the terminal hydroxyl. As for the reforming of glycerol with steam coupled to non-thermal plasma, it was found that an oxidative atmosphere was formed in the glycerol decomposition process, and that this process could be carried out via OH radicals. The dehydrogenation, induced by the calcined mineral coupled to NTP, was developed mainly on the secondary hydroxyl. Under reaction conditions of 200°C, 0.8 W of power, 3 kHz frequency and an active volume of 0.55 cm3, dihydroxyacetone, succinic acid and formic acid with selectivities of 14%, 14% and 8.2% respectively were obtained with a conversion of 52% glycerol, while the selectivities obtained without a catalyst were less than 6%. Finally, this study allowed us to establish that it is possible to generate a geocatalyst from the dunite from Medellin under the conditions used in this work, for the reforming of glycerol with steam by conventional catalysis or coupled to non-thermal plasma, being these alternatives viable and interesting for the valorization of glycerol towards products in gas or liquid phase. However, it is necessary to establish optimal conditions for obtaining synthesis gas and/or condensed products. It is also important to propose studies focused on elucidating the mechanisms by which the active Fe compounds in the calcined mineral (hematite, magnesioferrite, and magnetite) play their role in the decomposition of glycerol, in order to improve the geocatalyst performance and selectivity, taking advantage of the capacity of the material to mitigate coke deposits, characteristic observed by conventional catalysis.DoctoradoDoctor en IngenieríaGeocatálisisÁrea Curricular de Materiales y Nanotecnología142 páginasapplication/pdfspaUniversidad Nacional de ColombiaMedellín - Minas - Doctorado en Ingeniería - Ciencia y Tecnología de MaterialesDepartamento de Materiales y MineralesFacultad de MinasMedellín, ColombiaUniversidad Nacional de Colombia - Sede Medellín540 - Química y ciencias afines::549 - Mineralogía660 - Ingeniería química::661 - Tecnología de químicos industriales620 - Ingeniería y operaciones afines::622 - Minería y operaciones relacionadasRocas metamórficasCatálisisRocks, metamorphicCatalysisOlivinoGeocatálisisReformado con vaporValorización de glicerolPlasma no térmicoOlivineGeocatalystSteam reformingGlicerol valorizationNon-termal plasmaEvaluación de la actividad catalítica de una muestra de la Dunita de Medellín en la generación de productos con valor agregado a partir de glicerolEvaluation of the catalytic activity of a sample of Dunite from Medellín in the generation of value-added products from glycerolTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06Texthttp://purl.org/redcol/resource_type/TDA. 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