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The use of an industrial mineral waste as catalyst in the hydroconversion of dibenzylether and a colombian subbituminous coal

Utilización de un residuo mineral industrial como catalizador en la hidroconversión de dibenciléter y de un carbón subbituminoso colombiano

dc.creatorSánchez-Castañeda, Juliana
dc.creatorMoreno-Lopera, Andrés
dc.creatorRuiz-Machado, Wilson A.
dc.date2016-01-30
dc.date.accessioned2021-03-18T21:06:44Z
dc.date.available2021-03-18T21:06:44Z
dc.identifierhttps://revistas.itm.edu.co/index.php/tecnologicas/article/view/594
dc.identifier10.22430/22565337.594
dc.identifier.urihttp://test.repositoriodigital.com:8080/handle/123456789/11684
dc.descriptionAn industrial mineral waste produced in the aluminum sulphate industry was selected as a low cost catalyst precursor. This material has been active in dibenzylether hydroconversion, as a model compound of C-O linkages in coal. Besides, it was used in the hydroconversion of a colombian subbituminous coal. The mineral waste and a commercial iron oxide (as reference material) were sulfided in order to produce iron sulfide, pyrrhotite type (Fe1-xS), which is the active phase in hydroconversion reactions. The solids were characterized by X-ray fluorescence, X-ray diffraction, Raman spectroscopy and scanning electron microscopy. Catalytic tests with the model compound and coal were carried out at 5 MPa of H2, temperatures between 240 °C and 400 °C and reaction times were 0.5 h or 1 h. The results showed a higher activity of the industrial mineral waste compared with the reference material in the dibenzylether C-O bond cleavage. These kind of bonds are responsible for asphalthenes and preasphalthenes assembly in the molecular coal structure. In addition, coal conversion in presence of catalysts was 83.9 %, this value was 1.8 times higher than conversion without catalyst. Results show the potential of the industrial mineral waste to be used as catalyst in the hydroconversion of coal due to its good activity and low cost.en-US
dc.descriptionUn residuo mineral industrial, proveniente de la producción de sulfato de aluminio, se utilizó como precursor para la preparación de un catalizador de bajo costo, activo en reacciones de hidroconversión de dibenciléter, como compuesto modelo de las uniones C-O en el carbón, y de un carbón subbtituminoso colombiano. El residuo mineral y un óxido de hierro comercial (material de referencia) se sometieron a un proceso de sulfuración con el propósito de generar un sulfuro de hierro tipo pirrotita (Fe1-xS), el cual es la fase activa del hierro en reacciones de hidroconversión. Los sólidos se caracterizaron por difracción de rayos X, fluorescencia de rayos X, espectroscopía Raman y microscopía electrónica de barrido. Las pruebas de actividad catalítica, con el compuesto modelo y el carbón, se realizaron a 5 MPa H2, a temperaturas entre 240 °C y 400 °C y tiempos de reacción de 0,5 h y 1 h. Los resultados mostraron que el residuo mineral industrial fue más activo que el material de referencia y que presentó alta actividad hacia la ruptura de los enlaces C-O en el dibenciléter, siendo estos los enlaces responsables del ensamble de asfaltenos y preasfaltenos en la estructura molecular del carbón. Adicionalmente, la conversión del carbón incrementó significativamente en presencia del residuo mineral sulfurado alcanzando un valor de 83,9 %, valor 1,8 veces mayor que para la reacción sin catalizador, evidenciando el potencial del residuo mineral para ser usado como catalizador en la hidroconversión del carbón, debido a su buena actividad y bajo costo.es-ES
dc.formatapplication/pdf
dc.languagespa
dc.publisherInstituto Tecnológico Metropolitano (ITM)en-US
dc.relationhttps://revistas.itm.edu.co/index.php/tecnologicas/article/view/594/621
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dc.rightsCopyright (c) 2017 Tecno Lógicasen-US
dc.sourceTecnoLógicas; Vol. 19 No. 36 (2016); 91-102en-US
dc.sourceTecnoLógicas; Vol. 19 Núm. 36 (2016); 91-102es-ES
dc.source2256-5337
dc.source0123-7799
dc.subjectBauxiteen-US
dc.subjectiron sulfidesen-US
dc.subjectdibenzyletheren-US
dc.subjecthydroconversionen-US
dc.subjectcoalen-US
dc.subjectBauxitaes-ES
dc.subjectsulfuros de hierroes-ES
dc.subjectdibenciléteres-ES
dc.subjecthidroconversiónes-ES
dc.subjectcarbónes-ES
dc.titleThe use of an industrial mineral waste as catalyst in the hydroconversion of dibenzylether and a colombian subbituminous coalen-US
dc.titleUtilización de un residuo mineral industrial como catalizador en la hidroconversión de dibenciléter y de un carbón subbituminoso colombianoes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeResearch Papersen-US
dc.typeArtículos de investigaciónes-ES


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