Взаємодія вінілових мономерів з поверхнею анатазу і високодисперсного титанвмісного кремнезему
The interaction of some vinyl monomers (styrene, n-butyl vinyl ether, N-vinylpyrrolidinone, methacrylate and vinyl acetate) with surfaces of thermoactivated anatase and titanium-containing silica has been studied by means of IR-spectroscopy and derivatography. The Lewis acid sites of titanium dioxid...
Gespeichert in:
| Datum: | 2004 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2004
|
| Online Zugang: | https://surfacezbir.com.ua/index.php/surface/article/view/134 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Surface |
| Завантажити файл: |  |
Institution
Surface| Zusammenfassung: | The interaction of some vinyl monomers (styrene, n-butyl vinyl ether, N-vinylpyrrolidinone, methacrylate and vinyl acetate) with surfaces of thermoactivated anatase and titanium-containing silica has been studied by means of IR-spectroscopy and derivatography. The Lewis acid sites of titanium dioxide surface have been found to be capable to initiate an oligomerisation of adsorbed molecules of styrene, n-butyl vinyl ether, and N-vinylpyrrolidinone. Basing on the results of quantum chemical calculations, a coordination mechanism has been proposed of the oligomerisation of vinyl monomers with participation of coordinatedly unsaturated titanium ions at the surfaces of oxides examined. A possibility has been shown to produce composite materials with a content of organic matter of 25-55 wt. % by the method of adsorption oligomerisation at the temperature of 30 to 120°C. |
|---|