NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Mass Spectrometric Identification of Si-O-H(g) Species from the Reaction of Silica with Water Vapor at Atmospheric PressureA high-pressure sampling mass spectrometer was used to detect the volatile species formed from SiO2 at temperatures between 1200C and 1400C in a flowing water vapor/oxygen gas mixture at 1 bar total pressure. The primary vapor species identified was Si(OH)4. The fragment ion Si(OH)3+,' was observed in quantities 3 to 5 times larger than the parent ion Si(OH)4+. The Si(OH)3+ intensity was found to have a small temperature dependence and to increase with the water vapor partial pressure as expected. In addition, SiO(OH)+ believed to be a fragment of SiO(OH)2, was observed. These mass spectral results were compared to the behavior of silicon halides.
Document ID
19990104326
Document Type
Reprint (Version printed in journal)
Authors
Opila, Elizabeth J. (Cleveland State Univ. Cleveland, OH United States)
Fox, Dennis S. (NASA Lewis Research Center Cleveland, OH United States)
Jacobson, Nathan S. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Publication Information
Publication: Journal of the American Ceramic Society
Volume: 80
Issue: 4
Subject Category
Geophysics
Funding Number(s)
PROJECT: RTOP 537-04-22
Distribution Limits
Public
Copyright
Other