Characterization of Carbon Molecular Sieve Membranes Supported on Ceramic Tubes

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Título: Characterization of Carbon Molecular Sieve Membranes Supported on Ceramic Tubes
Autor/es: Briceño, Kelly | Silvestre-Albero, Joaquín | Silvestre Albero, Ana | Calvo Díaz, José Ignacio | Montané, Daniel | Garcia-Valls, Ricard | Hernández Giménez, Antonio | 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: Carbon molecular sieve membranes | Ceramic tubes
Área/s de conocimiento: Química Inorgánica
Fecha de publicación: mar-2013
Editor: Multi Science Publishing
Cita bibliográfica: Adsorption Science & Technology. 2013, 31(2-3): 233-247. doi:10.1260/0263-6174.31.2-3.233
Resumen: Carbon molecular sieve membranes have been analyzed in supported and unsupported configurations in this experimental study. The membranes were used to adsorb CO2, N2 and CH4, and their adsorption data were analyzed to establish differences in rate and capacity of adsorption between the two types of samples (supported and unsupported). Experimental results show an important effect of the support, which can be considered as an additional parameter to tailor pore size on these carbon membranes. Immersion calorimetry values were measured by immersing the membranes into liquids of different molecular dimensions (dichloromethane, benzene, n-hexane, 2,2-dimethylbutane). Similarities were found between adsorption and calorimetric analysis. The pore volume of the samples analyzed ranged from 0.016 to 0.263 cm3/g. The effect of the pyrolysis temperature, either 550 or 700 °C, under N2 atmosphere was also analyzed. Quantification of the pore-size distribution of the support was done by liquid-liquid displacement porosimetry. The composite membrane was used for CO2/CH4 separation before and after pore plugging was done. The ideal selectivity factors value (4.47) was over the Knudsen theoretical factor (0.60) for membrane pyrolyzed at 600 °C, which indicates the potential application of these membranes for the separation of low-molecular weight gases.
Patrocinador/es: The authors are indebted to the Spanish Government for financial support (Project CTQ2008-02491, partially funded by the FEDER program of the European Union) and to the commission of European Communities Specific OpenTok Project MTKD-LT-2005-030040.
URI: http://hdl.handle.net/10045/42761
ISSN: 0263-6174 (Print) | 2048-4038 (Online)
DOI: 10.1260/0263-6174.31.2-3.233
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © Multi-Science Publishing
Revisión científica: si
Versión del editor: http://dx.doi.org/10.1260/0263-6174.31.2-3.233
Aparece en las colecciones:INV - LMA - Artículos de Revistas

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