Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours
The fundamental equation for the pressure p al of the adsorbed phase is derived by the thermodynamic treatment of micropore volume filling (MVF) process which also takes into account the structural changes of the adsorbate in the field of adsorption forces. The introduction of the principle of hydro...
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| Format: | Article |
| Language: | English |
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SAGE Publications
1984-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361748400100203 |
| _version_ | 1797281439924879360 |
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| author | O. Kadlec |
| author_facet | O. Kadlec |
| author_sort | O. Kadlec |
| collection | DOAJ |
| description | The fundamental equation for the pressure p al of the adsorbed phase is derived by the thermodynamic treatment of micropore volume filling (MVF) process which also takes into account the structural changes of the adsorbate in the field of adsorption forces. The introduction of the principle of hydro-dynamical and mechanical equilibria reveals that MVF mechanisms can be characterized and classified according to the values of the pressures p f al corresponding to the beginning of MVF. The values of these pressures are calculated on the basis of experimental measurements of the length changes of the adsorbent rods during vapour adsorption. It is concluded, that the validity of the potential theory for MVF is based on the equality of the p f al and the standard liquid state p o l pressures (mechanism MVF 1). The existence of negative pressures p al is typical for the MVF 2 mechanism. The positive values of p f al are characteristic for the intrusion of liquids into the micropores of solids, not wetted by the liquid (mechanism MVF 3). |
| first_indexed | 2024-03-07T16:57:40Z |
| format | Article |
| id | doaj.art-067f402a738342c2a3abed0e75e0575e |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T16:57:40Z |
| publishDate | 1984-06-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-067f402a738342c2a3abed0e75e0575e2024-03-03T03:33:17ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40381984-06-01110.1177/026361748400100203Mechanisms of the Volume Filling of Micropores during the Adsorption of VapoursO. KadlecThe fundamental equation for the pressure p al of the adsorbed phase is derived by the thermodynamic treatment of micropore volume filling (MVF) process which also takes into account the structural changes of the adsorbate in the field of adsorption forces. The introduction of the principle of hydro-dynamical and mechanical equilibria reveals that MVF mechanisms can be characterized and classified according to the values of the pressures p f al corresponding to the beginning of MVF. The values of these pressures are calculated on the basis of experimental measurements of the length changes of the adsorbent rods during vapour adsorption. It is concluded, that the validity of the potential theory for MVF is based on the equality of the p f al and the standard liquid state p o l pressures (mechanism MVF 1). The existence of negative pressures p al is typical for the MVF 2 mechanism. The positive values of p f al are characteristic for the intrusion of liquids into the micropores of solids, not wetted by the liquid (mechanism MVF 3).https://doi.org/10.1177/026361748400100203 |
| spellingShingle | O. Kadlec Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours Adsorption Science & Technology |
| title | Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours |
| title_full | Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours |
| title_fullStr | Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours |
| title_full_unstemmed | Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours |
| title_short | Mechanisms of the Volume Filling of Micropores during the Adsorption of Vapours |
| title_sort | mechanisms of the volume filling of micropores during the adsorption of vapours |
| url | https://doi.org/10.1177/026361748400100203 |
| work_keys_str_mv | AT okadlec mechanismsofthevolumefillingofmicroporesduringtheadsorptionofvapours |