3803
2007, 111, 3803-3805 Published on Web 02/17/2007
Kinetic Restrictions in the Characterization of Narrow Microporosity in Carbon Materials Rachel V. R. A. Rios, Joaquı´n Silvestre-Albero, Antonio Sepu´ lveda-Escribano, Miguel Molina-Sabio, and Francisco Rodrı´guez-Reinoso* Laboratorio de Materiales AVanzados, Departamento de Quı´mica Inorga´ nica, UniVersidad de Alicante, E-03080 Alicante, Spain ReceiVed: January 8, 2007; In Final Form: February 5, 2007
Textural characterization of porous solids is commonly carried out by N2 adsorption at 77 K. Additionally, CO2 adsorption at 273 K and sub-atmospheric pressure was proposed as a complement to N2 for the more complete characterization of the narrow microporosity. However, and contrary to the general assumption, CO2 adsorption may be kinetically restricted in narrow pores (
