Accession Number : AD0646285

Title :   REACTIONS OF NH3 WITH POROUS GLASS SURFACES.

Descriptive Note : Technical rept. Oct 66-Feb 67,

Corporate Author : RUTGERS - THE STATE UNIV NEW BRUNSWICK N J SCHOOL OF CHEMISTRY

Personal Author(s) : Low,M. J. D. ; Ramasubramanian,N. ; Subba Rao,V. V.

Report Date : 01 FEB 1967

Pagination or Media Count : 24

Abstract : Infrared spectra of NH3 sorbed on highly dehydroxylated, deuterated, and fluoridated porous glass were recorded. Two pairs of bands at 3409 and 3320/cm and at 3350 and 3308/cm were attributed to physically adsorbed NH3, hydrogen-bonded to the Si-OH and B-OH groups of the glass surface, resp. Bands at 3368 and 3282/cm were ascribed to a triple bond B:NH3 complex. Two pairs of bands at 3569 and 3479/cm and at 3543 and 3459/cm were ascribed to =B-NH2 and triple bond Si-NH2 groups, resp. A single band at 3455/cm was tentatively assigned to the N-H stretching vibration of a secondary amine, the nitrogen atom being bonded to two surface boron atoms. (Author)

Descriptors :   (*AMMONIA, *SORPTION), (*GLASS, SORPTION), POROUS MATERIALS, INFRARED SPECTRA, SURFACE PROPERTIES, ADSORPTION, CHEMISORPTION, COMPLEX COMPOUNDS, BAND SPECTRA, CHEMICAL BONDS, CHEMICAL REACTIONS, BORON COMPOUNDS, SILICON COMPOUNDS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE