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Artículo

Why the pore geometry model could affect the uniqueness of the PSD in AC characterization

Toso, Juan Pablo; Cornette, Valeria CeciliaIcon ; Yelpo, Victor AntonioIcon ; Alexandre de Oliveira, José CarlosIcon ; Azevedo, D.C.S.; López, Raúl HoracioIcon
Fecha de publicación: 02/2016
Editorial: Springer
Revista: Adsorption
ISSN: 0929-5607
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Astronomía

Resumen

In this paper we discuss why the pore geometry can affect the unicity of the pore size distribution (PSD) of a given activated carbon (AC) sample, when different probe gases are used in adsorption measures. In order to characterize the solid sample we used grand canonical Monte Carlo simulation and the independent pore model with slit or triangular pore geometry, focusing our analysis on the possibility of representing the adsorptive processes of a triangular pore of defined size by means of a combination of slit pores of different sizes. This representation is tested on experimental adsorption data of N2 (77 K) on AC samples and acceptable results were obtained. Finally, we have performed a theoretical test, which consisted of analyzing a virtual porous solid with this approach and different probe gases (N2 at 77 K and CO2 at 273 K), showing that the differences between the pore representations can cause differences between the solid representations for the adsorptive properties, for these different gases. The analysis presented here can be extended to other pore geometries and other adsorbates, and provide arguments to further explain results presented in our previous paper, which refers to cases when different adsorbates yield different PSDs for a given sample and the same pore geometry model.
Palabras clave: Ac Characterization , Gcmc , Pore Geometry , Psd
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/57845
URL: http://link.springer.com/article/10.1007%2Fs10450-016-9760-6
DOI: http://dx.doi.org/10.1007/s10450-016-9760-6
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Articulos de INST. DE FISICA APLICADA "DR. JORGE ANDRES ZGRABLICH"
Citación
Toso, Juan Pablo; Cornette, Valeria Cecilia; Yelpo, Victor Antonio; Alexandre de Oliveira, José Carlos; Azevedo, D.C.S.; et al.; Why the pore geometry model could affect the uniqueness of the PSD in AC characterization; Springer; Adsorption; 22; 2; 2-2016; 215-222
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