| Autor: |
Gobet, J., Kováts, E. sz. |
| Zdroj: |
Adsorption Science & Technology; March 1984, Vol. 1 Issue: 1 p77-92, 16p |
| Abstrakt: |
High purity fume silica has been treated following the recommended procedure, by heating at 1173 K for 120 h then by boiling in distilled water for 70 h. Finally the wet paste was frozen and liophilized. The resulting light powder, somewhat denser than the starting material, gave reproducible results in chemisorption experiments. Its surface is fully and evenly hydrated and its bulk does not contain water inclusions. After treatment with trimethyl-[dimethylamino]-silane at 453 K for 170 h such a sample was covered with a dense trimethylsiloxy layer with a surface concentration of 4·75 μmol m−2. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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