Metanación de CO2 sobre catalizadores básicos promovidos con CeO2

La reacción de metanacion de CO2 es una tecnología promisoria para el almacenamiento químico de energía a partir de H2 y CO2. Con el desarrollo del siguiente trabajo de grado se sinterizaron catalizadores de naturaleza básica tipo óxidos mixtos (OM) de CaCe y MgCe promovidos con cantidades nominales...

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Autores:
Osorio Restrepo, Ederson Arnedt
Tipo de recurso:
Fecha de publicación:
2020
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/79365
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/79365
Palabra clave:
540 - Química y ciencias afines::547 - Química orgánica
Catálisis
Catalysis
Conversión de CO2
Metanacion de CO2
Promotor de CeO2
CO2 conversion
CO2 methanation
CeO2 promoter
Biogás
Biogas
Fuente de energía renovable
Alternative energy sources
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_cffa37c7c19faa41c7895d4e5d37dd7a
oai_identifier_str oai:repositorio.unal.edu.co:unal/79365
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
title Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
spellingShingle Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
540 - Química y ciencias afines::547 - Química orgánica
Catálisis
Catalysis
Conversión de CO2
Metanacion de CO2
Promotor de CeO2
CO2 conversion
CO2 methanation
CeO2 promoter
Biogás
Biogas
Fuente de energía renovable
Alternative energy sources
title_short Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
title_full Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
title_fullStr Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
title_full_unstemmed Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
title_sort Metanación de CO2 sobre catalizadores básicos promovidos con CeO2
dc.creator.fl_str_mv Osorio Restrepo, Ederson Arnedt
dc.contributor.advisor.none.fl_str_mv Daza Velasquez, Carlos Enrique
dc.contributor.author.none.fl_str_mv Osorio Restrepo, Ederson Arnedt
dc.contributor.researchgroup.spa.fl_str_mv Estado Sólido y Catálisis Ambiental
dc.subject.ddc.spa.fl_str_mv 540 - Química y ciencias afines::547 - Química orgánica
topic 540 - Química y ciencias afines::547 - Química orgánica
Catálisis
Catalysis
Conversión de CO2
Metanacion de CO2
Promotor de CeO2
CO2 conversion
CO2 methanation
CeO2 promoter
Biogás
Biogas
Fuente de energía renovable
Alternative energy sources
dc.subject.other.none.fl_str_mv Catálisis
Catalysis
dc.subject.proposal.spa.fl_str_mv Conversión de CO2
Metanacion de CO2
Promotor de CeO2
dc.subject.proposal.eng.fl_str_mv CO2 conversion
CO2 methanation
CeO2 promoter
dc.subject.unesco.none.fl_str_mv Biogás
Biogas
Fuente de energía renovable
Alternative energy sources
description La reacción de metanacion de CO2 es una tecnología promisoria para el almacenamiento químico de energía a partir de H2 y CO2. Con el desarrollo del siguiente trabajo de grado se sinterizaron catalizadores de naturaleza básica tipo óxidos mixtos (OM) de CaCe y MgCe promovidos con cantidades nominales de CeO2 de 3 y 5 % en masa, por el método de coprecipitación. Las técnicas de caracterización a los cuales fueron sometidos revelaron diferencia entre las propiedades físicas de los sólidos, para el caso de los OM CaCe se presentan áreas superficiales, tamaños de cristalito y de partícula inferiores los determinados para los OM MgCe. Por otra parte, con la incorporación de CeO2 a los OM se observaron tendencias decrecientes en el tamaño de cristalito y en el tamaño de partícula de los OM, solo las propiedades reductivas de los OM MgCe se afectaron obteniendo un descenso en el porcentaje de reducibilidad de los sólidos, adicionalmente, el estudio de espectroscopia IR de reflectancia difusa, muestra un aumento en los sitios de adsorción de CO2, a la par con el incremento en la cantidad de promotor adicionado y de acuerdo a las bandas formadas sobre los OM se sugiere que la ruta de metanacion de CO2 para los OM sintetizados es la ruta del formiato Los resultados de la actividad catalítica muestran que los todos los OM presentan una mayor conversión de CO2 a bajas temperatura en comparación con el sólido de referencia de Ni/γAl2O3 y una selectividad del 100% a la formación de CH4 bajo las condiciones de WHSV= 60000 mLg-1h-1, el incremento de la velocidad espacial genera una fuerte disminución en la conversión de CO2 y un aumento en la selectividad a CO, sin embargo, se aprecia una conversión mayor a medida que el contenido del promotor es mayor. Los ensayos de estabilidad indican que lo OM MgCe son estable y no presentan formación de depósitos de coque, en contraste, a los OM CaCe se forman depósitos de carbono, pero en menor medida en el OM con promotor.
publishDate 2020
dc.date.issued.none.fl_str_mv 2020
dc.date.accessioned.none.fl_str_mv 2021-03-19T16:45:22Z
dc.date.available.none.fl_str_mv 2021-03-19T16:45:22Z
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/79365
url https://repositorio.unal.edu.co/handle/unal/79365
dc.language.iso.spa.fl_str_mv spa
language spa
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dc.format.extent.spa.fl_str_mv 1 recurso en línea (83 páginas)
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de ColombiaAcceso abiertohttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Daza Velasquez, Carlos Enriquea45290b28541ac792d818263871996b7Osorio Restrepo, Ederson Arnedt427876b253dbcea57e5ea9fe61e5b81fEstado Sólido y Catálisis Ambiental2021-03-19T16:45:22Z2021-03-19T16:45:22Z2020https://repositorio.unal.edu.co/handle/unal/79365La reacción de metanacion de CO2 es una tecnología promisoria para el almacenamiento químico de energía a partir de H2 y CO2. Con el desarrollo del siguiente trabajo de grado se sinterizaron catalizadores de naturaleza básica tipo óxidos mixtos (OM) de CaCe y MgCe promovidos con cantidades nominales de CeO2 de 3 y 5 % en masa, por el método de coprecipitación. Las técnicas de caracterización a los cuales fueron sometidos revelaron diferencia entre las propiedades físicas de los sólidos, para el caso de los OM CaCe se presentan áreas superficiales, tamaños de cristalito y de partícula inferiores los determinados para los OM MgCe. Por otra parte, con la incorporación de CeO2 a los OM se observaron tendencias decrecientes en el tamaño de cristalito y en el tamaño de partícula de los OM, solo las propiedades reductivas de los OM MgCe se afectaron obteniendo un descenso en el porcentaje de reducibilidad de los sólidos, adicionalmente, el estudio de espectroscopia IR de reflectancia difusa, muestra un aumento en los sitios de adsorción de CO2, a la par con el incremento en la cantidad de promotor adicionado y de acuerdo a las bandas formadas sobre los OM se sugiere que la ruta de metanacion de CO2 para los OM sintetizados es la ruta del formiato Los resultados de la actividad catalítica muestran que los todos los OM presentan una mayor conversión de CO2 a bajas temperatura en comparación con el sólido de referencia de Ni/γAl2O3 y una selectividad del 100% a la formación de CH4 bajo las condiciones de WHSV= 60000 mLg-1h-1, el incremento de la velocidad espacial genera una fuerte disminución en la conversión de CO2 y un aumento en la selectividad a CO, sin embargo, se aprecia una conversión mayor a medida que el contenido del promotor es mayor. Los ensayos de estabilidad indican que lo OM MgCe son estable y no presentan formación de depósitos de coque, en contraste, a los OM CaCe se forman depósitos de carbono, pero en menor medida en el OM con promotor.The CO2 methanation reaction is a promising technology for the chemical storage of energy from H2 and CO2, with the development of the following degree work, catalysts of a basic nature type mixed oxides (MO) of CaCe and MgCe promoted with amounts CeO2 nominals of 3 and 5% by mass, by the coprecipitation method the were synthetized. The characterization techniques to which they were subjected revealed a difference between the physical properties of the solids, for the case of the MO CaCe, surface areas, crystallite and particle sizes are presented lower than those determined for the MO MgCe. On the other hand, with the incorporation of CeO2 to the OM, decreasing trends were observed in the crystallite size and in the particle size of the MO, only the reductive properties of the OM MgCe were affected, obtaining a decrease in the percentage of deductibility of solids, additionally, diffuse reflectance IR spectroscopy study shows an increase in the CO2 adsorption sites, along with the increase in the amount of promoter added and according to the bands formed on the MO it is suggested that the CO2 methanation pathway for synthesized MO is the formiate pathway The results of the catalytic activity show that all the MO have a higher CO2 conversion at low temperature compared to the Ni/γAl2O3 reference solid and a selectivity of 100% to the formation of CH4 under the conditions of WHSV = 60000 mLg-1h-1, the increase in space velocity generates a strong decrease in CO2 conversion and an increase in selectivity to CO, however, a higher conversion is observed as the content of the promoter is higher. Stability tests indicate that MO MgCe are stable and do not present formation of coke deposits, in contrast, MO CaCe form carbon deposits, but to a lesser extent in MO with a promoter.MaestríaCatálisis heterogénea1 recurso en línea (83 páginas)application/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - QuímicaDepartamento de QuímicaFacultad de CienciasBogotáUniversidad Nacional de Colombia - Sede Bogotá540 - Química y ciencias afines::547 - Química orgánicaCatálisisCatalysisConversión de CO2Metanacion de CO2Promotor de CeO2CO2 conversionCO2 methanationCeO2 promoterBiogásBiogasFuente de energía renovableAlternative energy sourcesMetanación de CO2 sobre catalizadores básicos promovidos con CeO2Trabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TM[1] B.P. Foundation, Territorial emissions in MtCO2, Glob. Carbon Atlas. 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