Low-pressure argon adsorption assessment of micropore connectivities in activated carbons
| Autor: | L. Cossarutto, Frédéric Villiéras, T. Zimny, G. Finqueneisel, Jean-Victor Weber |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Argon
Chemistry Analytical chemistry chemistry.chemical_element 02 engineering and technology Microporous material Partial pressure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Colloid and Surface Chemistry Adsorption Mass transfer medicine 0210 nano-technology Porosity Activated carbon medicine.drug |
| Zdroj: | Journal of colloid and interface science. 293(1) |
| ISSN: | 0021-9797 |
| Popis: | Low-pressure argon adsorption has been used to study the energetic distribution of microporous activated carbons differing by their burn-off. 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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