Well-defined meso/macroporous materials as a host structure for methane hydrate formation: Organic versus carbon xerogels
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Título: | Well-defined meso/macroporous materials as a host structure for methane hydrate formation: Organic versus carbon xerogels |
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Autor/es: | Cuadrado-Collados, Carlos | Farrando Pérez, Judit | Martinez-Escandell, Manuel | Ramírez-Montoya, Luis Adrián | Menéndez, J. Angel | Arenillas, Ana | Montes-Morán, Miguel A. | Silvestre-Albero, Joaquín |
Grupo/s de investigación o GITE: | Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Xerogels | Gas hydrates | Confinement effects | Porous structure | Surface chemistry |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 15-dic-2020 |
Editor: | Elsevier |
Cita bibliográfica: | Chemical Engineering Journal. 2020, 402: 126276. https://doi.org/10.1016/j.cej.2020.126276 |
Resumen: | A series of xerogels with a properly designed porous structure and surface chemistry have been synthesized and evaluated as a host structure to promote the nucleation and growth of methane hydrates. Organic xerogels (OGs) have been synthesized from resorcinol-formaldehyde mixtures using a sol-gel approach and microwave heating. These xerogels are hydrophilic in nature and possess designed meso/macrocavities in the pore size range 5–55 nm. Carbon xerogels (CGs) have been synthesized from their organic counterparts after a carbonization treatment at high temperature. Interestingly, the carbonization process does not alter/modify substantially the porous network of the parent xerogels, while developing new micropores. Under water-supplying conditions, the two types of xerogels exhibit a large improvement in the methane adsorption capacity compared to the pure physisorption process taking place in dry conditions (up to 200% improvement), and associated with a significant hysteresis loop. These excellent values must be associated with the promoting effect of these xerogels in the water-to-hydrate conversion process. The comparison of OGs and CGs as a host structure anticipates that surface chemistry, total pore volume and pore size are critical parameters defining the extent and yield of the methane hydrate formation process. |
Patrocinador/es: | Authors would like to acknowledge financial support from the MINECO (projects MAT2016-80285-p and CTQ2017-87820-R). Principado de Asturias-FICYT-FEDER (Project PCTI-Asturias IDI/2018/000118) is also acknowledged. L.A. Ramírez-Montoya thanks CONACyT, México, for a post-doctoral grant (CVU No 330625, 2017). |
URI: | http://hdl.handle.net/10045/108337 |
ISSN: | 1385-8947 (Print) | 1873-3212 (Online) |
DOI: | 10.1016/j.cej.2020.126276 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 Elsevier B.V. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.cej.2020.126276 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Cuadrado-Collados_etal_2020_ChemEngJ_final.pdf | Versión final (acceso restringido) | 1,85 MB | Adobe PDF | Abrir Solicitar una copia |
Cuadrado-Collados_etal_2020_ChemEngJ_accepted.pdf | Accepted Manuscript (acceso abierto) | 1,42 MB | Adobe PDF | Abrir Vista previa |
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