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Reaction of Cyanogen with SiO 2 Surfaces
Author(s) -
RUTTENBERG F. E.,
LOW M. J. D.
Publication year - 1973
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1973.tb12478.x
Subject(s) - sorption , cyanogen , isocyanate , chemistry , infrared spectroscopy , infrared , silicon , inorganic chemistry , materials science , adsorption , organic chemistry , polyurethane , physics , optics
Infrared spectra (4000 to 1300 cm −1 ) of SiO 2 specimens with high surface areas which had been exposed to (CN) 2 at 25° to 600°C were recorded. Sorption was slight at 25°, but extensive reaction occurred at higher temperatures. The main effects of the sorption were the decrease of the 3747 cm −1 band of surface Si‐OH groups and the buildup of a prominent band at 2310 cm −1 thought to be caused by surface Si‐NCO species rather than Si‐OCN species. The data suggest that, in addition to the isocyanate formed in the dehydroxylation reaction, HCN produced in that reaction led to the formation of Si‐CN and Si‐OH