Carbon molecular sieves prepared from polymeric precursors / Ana Ma Silvestre-Albero in Industrial & engineering chemistry research, Vol. 48 N° 15 (Août 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7125–7131 Titre : Carbon molecular sieves prepared from polymeric precursors : porous structure and hydrogen adsorption properties Type de document : texte imprimé Auteurs : Ana Ma Silvestre-Albero, Auteur ; Anass Wahby, Auteur ; Joaquín Silvestre-Albero, Auteur Année de publication : 2009 Article en page(s) : pp. 7125–7131 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Carbon molecular sieves Polymer precursors N2 adsorption CO2 Résumé : The textural characterization of a series of carbon molecular sieves (CMS) prepared from different polymer precursors has been investigated using N2 adsorption at 77 K and CO2 adsorption at 273 K, together with immersion calorimetry into liquids of different molecular dimensions. Experimental results show that the carbon molecular sieves cover a wide range of porosity, from pure microporous CMS (pore diameter below 0.56 nm) to CMS combining larger micropores (above 0.7 nm) together with a certain proportion of mesoporosity. H2 adsorption measurements on these CMS at cryogenic temperature (77 K) and ambient pressure (0.1 MPa) show that the hydrogen adsorption capacity exhibits a linear correlation with the volume of narrow micropores (Vn). Furthermore, these results confirm experimentally the necessity of a tailored micropore size in order to achieve an optimum packing density of the adsorbed hydrogen molecules (micropore size around 0.6 nm). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900091n [article] Carbon molecular sieves prepared from polymeric precursors : porous structure and hydrogen adsorption properties [texte imprimé] / Ana Ma Silvestre-Albero, Auteur ; Anass Wahby, Auteur ; Joaquín Silvestre-Albero, Auteur . - 2009 . - pp. 7125–7131. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 15 (Août 2009) . - pp. 7125–7131 Mots-clés : Carbon molecular sieves Polymer precursors N2 adsorption CO2 Résumé : The textural characterization of a series of carbon molecular sieves (CMS) prepared from different polymer precursors has been investigated using N2 adsorption at 77 K and CO2 adsorption at 273 K, together with immersion calorimetry into liquids of different molecular dimensions. Experimental results show that the carbon molecular sieves cover a wide range of porosity, from pure microporous CMS (pore diameter below 0.56 nm) to CMS combining larger micropores (above 0.7 nm) together with a certain proportion of mesoporosity. H2 adsorption measurements on these CMS at cryogenic temperature (77 K) and ambient pressure (0.1 MPa) show that the hydrogen adsorption capacity exhibits a linear correlation with the volume of narrow micropores (Vn). Furthermore, these results confirm experimentally the necessity of a tailored micropore size in order to achieve an optimum packing density of the adsorbed hydrogen molecules (micropore size around 0.6 nm). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900091n

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