Adsorption of Water Vapour on Rutile and Silica-Coated Rutile
Adsorption isotherms of water vapour have been determined at 25°C on pure rutile (surface area 22 m 2 .g −1 ) and on two samples of the rutile coated with different amounts of dense silica (0·6 & 2·6 wt% SiO 2 ). With each adsorbent, the adsorption measurements were made after outgassing at temp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
1986-03-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361748600300105 |
| _version_ | 1797285277205528576 |
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| author | D. N. Furlong K. S. W. Sing G. D. Parfitt |
| author_facet | D. N. Furlong K. S. W. Sing G. D. Parfitt |
| author_sort | D. N. Furlong |
| collection | DOAJ |
| description | Adsorption isotherms of water vapour have been determined at 25°C on pure rutile (surface area 22 m 2 .g −1 ) and on two samples of the rutile coated with different amounts of dense silica (0·6 & 2·6 wt% SiO 2 ). With each adsorbent, the adsorption measurements were made after outgassing at temperatures of 298, 373, 423 and 573 K, and finally at 298 K in the case of the pure rutile. An upward displacement of the isotherms with an increase in the outgassing temperature was found with each system but a pronounced change in isotherm character was found only with pure rutile. It is concluded that ligand water is incorporated into the surface structure of rutile, thus providing additional sites for the physisorption of water in the hydrogen-bonded form. The addition of 0·6 wt% of silica appeared to be sufficient to block off the cationic sites and the resulting surface then became remarkably similar to that of precipitated silica. |
| first_indexed | 2024-03-07T18:00:51Z |
| format | Article |
| id | doaj.art-9b9cdc9e9ef5429ca496dae312ba4bbf |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:00:51Z |
| publishDate | 1986-03-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-9b9cdc9e9ef5429ca496dae312ba4bbf2024-03-02T10:53:54ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40381986-03-01310.1177/026361748600300105Adsorption of Water Vapour on Rutile and Silica-Coated RutileD. N. FurlongK. S. W. SingG. D. ParfittAdsorption isotherms of water vapour have been determined at 25°C on pure rutile (surface area 22 m 2 .g −1 ) and on two samples of the rutile coated with different amounts of dense silica (0·6 & 2·6 wt% SiO 2 ). With each adsorbent, the adsorption measurements were made after outgassing at temperatures of 298, 373, 423 and 573 K, and finally at 298 K in the case of the pure rutile. An upward displacement of the isotherms with an increase in the outgassing temperature was found with each system but a pronounced change in isotherm character was found only with pure rutile. It is concluded that ligand water is incorporated into the surface structure of rutile, thus providing additional sites for the physisorption of water in the hydrogen-bonded form. The addition of 0·6 wt% of silica appeared to be sufficient to block off the cationic sites and the resulting surface then became remarkably similar to that of precipitated silica.https://doi.org/10.1177/026361748600300105 |
| spellingShingle | D. N. Furlong K. S. W. Sing G. D. Parfitt Adsorption of Water Vapour on Rutile and Silica-Coated Rutile Adsorption Science & Technology |
| title | Adsorption of Water Vapour on Rutile and Silica-Coated Rutile |
| title_full | Adsorption of Water Vapour on Rutile and Silica-Coated Rutile |
| title_fullStr | Adsorption of Water Vapour on Rutile and Silica-Coated Rutile |
| title_full_unstemmed | Adsorption of Water Vapour on Rutile and Silica-Coated Rutile |
| title_short | Adsorption of Water Vapour on Rutile and Silica-Coated Rutile |
| title_sort | adsorption of water vapour on rutile and silica coated rutile |
| url | https://doi.org/10.1177/026361748600300105 |
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