Low pressure argon adsorption assessement of the pores connectiviries in activated carbon

Autor: Zimny, Thierry, Villiéras, Frédéric, Finqueneisel, G., Cossarutto, Laurent, Weber, Jean-Victor
Přispěvatelé: Laboratoire de Chimie et Applications (LCA), Université Paul Verlaine - Metz (UPVM), Laboratoire Environnement et Minéralurgie (LEM), Institut National Polytechnique de Lorraine (INPL)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2006
Předmět:
Zdroj: Journal of Colloid and Interface Science
Journal of Colloid and Interface Science, Elsevier, 2006, 293, pp.248-251. ⟨10.1016/j.jcis.2005.06.044⟩
ISSN: 0021-9797
1095-7103
DOI: 10.1016/j.jcis.2005.06.044⟩
Popis: Low-pressure argon adsorption has been used to study the energetic distribution of microporous activated carbons differing by their burnoff. The collected isotherms were analyzed using the derivative isotherm summation method. Some oscillations on the experimental curves for very low partial pressures were detected. The results are analyzed and discussed according to the literature and could be attributed to local overheating caused by spontaneous mass transfer of argon through constrictions between former pores and the new opening pore or deadend pores. We used the dynamic character of the experimental method and mainly the discrepancy of the quasi-equilibrium state to deduce key parameters related to the porosity topology.
Databáze: OpenAIRE
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