Accession Number : AD0638237

Title :   CONTAMINATION OF SILICAS DURING HIGH TEMPERATURE DEGASSING IN VYCOR TUBES.

Descriptive Note : Technical rept. no. 3, Jun-Sep 66.

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

Personal Author(s) : Low,M. J. D. ; Ramasubramanian,N. ; Ramamurthy,P.

Report Date : 06 SEP 1966

Pagination or Media Count : 16

Abstract : An infrared absorption near 3702/cm was produced if Cab-O-Sil was degassed at 800C in a Vycor cell, and then partially hydrated. The band was not produced with specimens degassed in quartz cells. A variety of experiments lend strong although indirect support to the conclusion that the band was due to surface B-OH groups brought about through the contamination of the silica surface by boron voltailized from the hot Vycor. Similar contamination can be expected to occur with all specimens heated at 800C in Vycor, but the effects of the contamination may not be readily discernible by means of infrared spectra. (Author)

Descriptors :   (*SILICON COMPOUNDS, CONTAMINATION), (*DEGASIFICATION, SILICON COMPOUNDS), DIOXIDES, INFRARED SPECTRA, HYDROXIDES, VACUUM APPARATUS, GLASS, BORON COMPOUNDS, BAND SPECTRA

Subject Categories : Ceramics, Refractories and Glass
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE