High-Resolution N2 Adsorption Isotherms at 77.4 K: Critical Effect of the He Used During Calibration
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Título: | High-Resolution N2 Adsorption Isotherms at 77.4 K: Critical Effect of the He Used During Calibration |
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Autor/es: | Silvestre-Albero, Joaquín | Silvestre Albero, Ana | Llewellyn, Philip L. | Rodríguez Reinoso, Francisco |
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: | High-resolution | N2 adsorption isotherms |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 25-jul-2013 |
Editor: | American Chemical Society |
Cita bibliográfica: | The Journal of Physical Chemistry C. 2013, 117(33): 16885-16889. doi:10.1021/jp405719a |
Resumen: | Accurate characterization of the microporous structure in porous solids is of paramount importance for several applications such as energy and gas storage, nanoconfinement reactions, and so on. Among the different techniques for precise textural characterization, high-precision gas adsorption measurement of probe molecules at cryogenic temperatures (e.g., N2 at 77.4 K and Ar at 87.3 K) is the most widely used, after appropriate calibration of the sample holder with a probe gas, which does not experience physisorption processes. Although traditionally helium has been considered not to be adsorbed in porous solids at cryogenic temperatures, here we show that even at 77.4 K (high above its boiling temperature, 4 K) the use of He in the calibration step can give rise to erroneous interpretations when narrow micropores/constrictions are present. |
Patrocinador/es: | Authors acknowledge financial support from the MICINN (project PLE2009-0052) and Generalitat Valenciana (PROMETEO/2009/002). |
URI: | http://hdl.handle.net/10045/39533 |
ISSN: | 1932-7447 (Print) | 1932-7455 (Online) |
DOI: | 10.1021/jp405719a |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2013 American Chemical Society |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1021/jp405719a |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
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2013_Silvestre_etal_JPCC_final.pdf | Versión final (acceso restringido) | 723,67 kB | Adobe PDF | Abrir Solicitar una copia |
2013_Silvestre_etal_JPCC.pdf | Versión revisada (acceso abierto) | 628,96 kB | Adobe PDF | Abrir Vista previa |
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