Molecular sieving of linear and branched C6 alkanes by tannin-derived carbons
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Título: | Molecular sieving of linear and branched C6 alkanes by tannin-derived carbons |
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Autor/es: | Castro-Gutiérrez, Jimena | Jardim, Erika de Oliveira | Canevesi, Rafael L.S. | Silvestre-Albero, Joaquín | Kriesten, Martin | Thommes, Matthias | Celzard, Alain | Fierro, Vanessa |
Grupo/s de investigación o GITE: | Materiales Avanzados | Laboratorio de Nanotecnología Molecular (NANOMOL) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Alkane separation | Micro-mesoporous carbons | Tannins | Molecular sieves |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 15-abr-2021 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2021, 174: 413-422. https://doi.org/10.1016/j.carbon.2020.12.061 |
Resumen: | Two micro-mesoporous carbons (MMCs): a disordered mesoporous carbon (DMC) and an ordered mesoporous carbon (OMC), synthesized by an easy, low-cost, and green method are proposed as efficient hydrocarbon sieves for the separation of C6 isomers: n-hexane (nHEX), 2-methylpenthane (2 MP) and 2,2-dimethylbutane (22DMB). Their textural characterization reveals a highly interconnected pore network within the DMC, while a reverse hierarchy of ordered mesopores only accessible through narrow micropores is found in the OMC. The pore texture strongly affects their adsorption performance by kinetic and molecular sieving effects; the narrow constrictions in the OMC allow adsorption of nHEX and partially 2 MP but not 22DMB, whereas the highly connected pore network of DMC allows adsorption of the three isomers. Multi-component adsorption isotherms calculated from the single-component experimental results by ideal adsorbed solution theory (IAST) demonstrates that the OMC material has a remarkably high selectivity for the adsorption of nHEX and nHEX + 2 MP from binary and ternary mixtures, respectively. To the best of the authors’ knowledge, such behavior has never been reported so far for carbon materials. Hence, this study shows that tannin-derived MMCs have great potential to be used as an eco-friendly and low-cost alternative for the selective separation of di-branched C6 isomers. |
Patrocinador/es: | Jimena Castro-Gutiérrez gratefully acknowledges CONACYT-SENER for the scholarship awarded (601021/438978) to support her PhD studies, resulting in the work presented herein. This study was partly funded by the French PIA project "Lorraine Université d’Excellence”, reference ANR-15-IDEX-04-LUE, and TALiSMAN project, funded by FEDER (2019-000214). Joaquín Silvestre-Albero would like to acknowledge the financial support from MINECO (PID2019-108453GB-C21) and H2020 (MSCA-RISE-2016/NanoMed Project). |
URI: | http://hdl.handle.net/10045/111600 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2020.12.061 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.carbon.2020.12.061 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas INV - NANOMOL - Artículos de Revistas Investigaciones financiadas por la UE |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Castro-Gutierrez_etal_2021_Carbon_final.pdf | Versión final (acceso restringido) | 2,51 MB | Adobe PDF | Abrir Solicitar una copia |
Castro-Gutierrez_etal_2021_Carbon_accepted.pdf | Accepted Manuscript (acceso abierto) | 3,08 MB | Adobe PDF | Abrir Vista previa |
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