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Evaluation of the applicability of Jäntti’s method to volumetric sorption measurements |
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| Authors: | J A Poulis E Robens C H Massen P Staszczuk |
| Institution: | 1. Faculty of Applied Physics, Technische Universiteit
Eindhoven, Eindhoven, The Netherlands, 5600 MB, 513 2. Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universit?t, Mainz, Germany, 55099, Duesbergweg 10-14 3. Department of Physicochemistry of Solid Surface, Faculty of Chemistry, Maria Curie-Sk?odowska University, Lublin, Poland, 20-031 |
| Abstract: | Jäntti published in 1970 a method to obtain values of the sorption parameters at an early stage of gravimetric sorption measurements. In the present paper we apply that method to volumetric sorption measurements to discuss its applicability. A method is presented to cope with inaccuracies when using Jäntti’s method. This will be of special importance for volumetric measurements where accuracy plays a major part. In the paper a second order regression method is used. We use a computer simulation as well as experimental data on desorption of nitrogen from a silica aerogel at 77 K. |
| Keywords: | adsorption fast measurement kinetics sorption volumetry |
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