ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Interaction of surface silanol groups of amorphous silicon dioxide with trichlorooxovanadium vapor

D. Damjanov and M. Velikova

Institut für Physikalische Chemie der Chemisch-Technologischen Hochschule, BG-8010 Burgas, Bulgarien

Abstract:  The reaction of VOCl₃ vapour with the maximal hydroxylated surface of different amorphous forms of SiO₂ is studied. It is shown that the quantity of the reacting silanol groups depends on the nature of SiO₂ , the structural characteristics of the initial samples being of substantial importance for the mechanism of the surface processes going on. The decrease of silanol groups concentration of vulcasil by thermal treatment does not lead to a fuller quantitative proceeding of the surface reactions with VOCl₃. The fixed quantities of vanadium and chlorine on the surface depend on the preliminary thermal treatment of the carrier.

Full paper in Portable Document Format: 382a173.pdf (in German)

Chemical Papers 38 (2) 173–179 (1984)