Accession Number:

AD0876577

Title:

Thermodynamic Properties of Rocket Combustion Products.

Descriptive Note:

Final rept. 19 May 69-22 Jul 70,

Corporate Author:

IIT RESEARCH INST CHICAGO IL

Personal Author(s):

Report Date:

1970-08-01

Pagination or Media Count:

48.0

Abstract:

The matrix isolation technique has been used to obtain the optical spectra of some high temperature species which are formed when aluminum is combusted in the presence of oxygen and hydrogen. Specifically, a search has been for the species Al2O3g, AlO2g and AlHOg, in the vaporization products of aluminum oxide at high temperature, either by itself, or in the presence of O2g or H2Og. Of the above species, there was some evidence for the existence of AlO2g, based on oxygen isotopic studies, but no definitive evidence was obtained for Al2O3g or AlHOg. The species Al2Og was identified as a major vaporization product of aluminum oxide. The previously estimated bending frequency of this molecule at 240cm was shown to be in error. A new bending frequency of 120 plus or minus 30cm was estimated by analogy with Li2O. Evidence was obtained for the presence of the species O, Al, AlO and Al2O2 in the vapors over molten aluminum oxide in addition to Al2O and AlO2, noted above. Author

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE