English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/115332
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 31 veces en Web of Knowledge®  |  Pub MebCentral Ver citas en PubMed Central  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Predicting Mixed-Gas Adsorption Equilibria on Activated Carbon for Precombustion CO2 Capture

Autor García López, Susana ; Pis Martínez, José Juan ; Rubiera González, Fernando ; Pevida García, Covadonga
Palabras clave Pre-combustion capture
Ternary mixtures
Multicomponent adsorption equilibria
Breakthrough experiments
Activated carbon
Fecha de publicación abr-2013
EditorAmerican Chemical Society
Citación Langmuir 29(20): 6042-6052 (2013)
ResumenWe present experimentally measured adsorption isotherms of CO2, H2, and N2 on a phenol–formaldehyde resin-based activated carbon, which had been previously synthesized for the separation of CO2 in a precombustion capture process. The single component adsorption isotherms were measured in a magnetic suspension balance at three different temperatures (298, 318, and 338 K) and over a large range of pressures (from 0 to 3000–4000 kPa). These values cover the temperature and pressure conditions likely to be found in a precombustion capture scenario, where CO2 needs to be separated from a CO2/H2/N2 gas stream at high pressure (∼1000–1500 kPa) and with a high CO2 concentration (∼20–40 vol %). Data on the pure component isotherms were correlated using the Langmuir, Sips, and dual-site Langmuir (DSL) models, i.e., a two-, three-, and four-parameter model, respectively. By using the pure component isotherm fitting parameters, adsorption equilibrium was then predicted for multicomponent gas mixtures by the extended models. The DSL model was formulated considering the energetic site-matching concept, recently addressed in the literature. Experimental gas-mixture adsorption equilibrium data were calculated from breakthrough experiments conducted in a lab-scale fixed-bed reactor and compared with the predictions from the models. Breakthrough experiments were carried out at a temperature of 318 K and five different pressures (300, 500, 1000, 1500, and 2000 kPa) where two different CO2/H2/N2 gas mixtures were used as the feed gas in the adsorption step. The DSL model was found to be the one that most accurately predicted the CO2 adsorption equilibrium in the multicomponent mixture. The results presented in this work highlight the importance of performing experimental measurements of mixture adsorption equilibria, as they are of utmost importance to discriminate between models and to correctly select the one that most closely reflects the actual process.
Versión del editorhttp://dx.doi.org/10.1021/la4004998
URI http://hdl.handle.net/10261/115332
DOI10.1021/la4004998
ISSN0743-7463
E-ISSN1520-5827
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Garcia_Langmuir_Predicting mixed.pdfArtículo principal2,28 MBAdobe PDFVista previa
Visualizar/Abrir
Garcia_Langmuir_Predicting mixed_Sup_Inf.pdfSupporting Information77,58 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.