2024-03-28T17:35:07Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1727752018-11-30T01:56:35Zcom_10261_84com_10261_5col_10261_337
2018-11-29T08:56:25Z
urn:hdl:10261/172775
Fibrous Carbon Molecular Sieves by Chemical Vapor Deposition of Benzene. Gas Separation Ability
Villar Rodil, Silvia
Denoyel, R.
Rouquerol, J.
Martínez Alonso, Amelia
Díez Tascón, Juan Manuel
Ministerio de Ciencia y Tecnología (España)
Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Villar Rodil, Silvia [0000-0002-5832-9971]
Martínez Alonso, Amelia [0000-0002-7183-0859]
Díez Tascón, Juan Manuel [0000-0001-9219-7266]
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see https://doi.org/10.1021/cm021193n
Activated carbon fibers (ACFs) prepared from highly ordered polymers, such as aramid fibers, have been proven to possess an outstanding homogeneity in pore size. Taking advantage of this feature, microporous carbon molecular sieves for separating gaseous mixtures such as CO2/CH4 and O2/N2 (air separation) have been prepared through chemical vapor deposition (CVD) of benzene on ACFs obtained from Nomex aramid fiber. Two batches of carbon fibers steam-activated to different burnoffs (BOs), namely, 21% and 42%, were subjected to CVD of benzene for different periods of time. The micropore size distribution of the resulting materials was assessed by immersion calorimetry into liquids of different molecular sizes (dichloromethane, benzene, and cyclohexane). Their validity for separating CO2/CH4 and O2/N2 was tested by performing the corresponding kinetics of adsorption experiments. Carbon molecular sieves with good selectivity for these two separations and showing acceptable adsorption capacities were obtained from ACFs activated to the two chosen BOs.
2018-11-29T08:56:25Z
2018-11-29T08:56:25Z
2002-09-21
artículo
Chemistry of Materials 14(10): 4328-4333 (2002)
0897-4756
http://hdl.handle.net/10261/172775
10.1021/cm021193n
1520-5002
http://dx.doi.org/10.13039/501100006280
http://dx.doi.org/10.13039/501100007273
eng
Postprint
https://doi.org/10.1021/cm021193n
Sí
https://creativecommons.org/licenses/by-nc-nd/4.0/
openAccess
American Chemical Society