Thermodynamic Properties of Rocket Combustion Products by Matrix Isolation Technique.

Abstract

The matrix isolation technique was used to obtain the infrared spectra (4000-200/cm) of the high temperature species, AlF2, Al2F6, AlF, BeCl2, BeBr2, BeI2, 6LiNaF2, LiNaF2, 6LiAlF4, 7LiAlF4, and NaAlF4. A new method for determining heats of sublimation of high temperature materials was developed using the matrix isolation technique. The method was tested by determining the heat of sublimation of AlF3, and then applied to the lithium fluoride vapor system. Heats of formation were obtained for LiF(g), Li2F2(g-linear) and Li2F2(g-rhombohedral). The matrix technique was further extended to the analysis of unstable radical intermediates in pyrolysis reactions. The infrared spectra of the species CH3, CD3, CF3, and CF2 were obtained using this new approach. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1971
Accession Number
AD0725766

Entities

People

  • Alan Snelson

Organizations

  • IIT Research Institute

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Combustion
  • Combustion Products
  • Electromagnetic Spectra
  • Heat Energy
  • Heat Of Sublimation
  • High Temperature
  • Infrared Spectra
  • Materials
  • Optical Materials
  • Pyrolysis
  • Spectra
  • Standard Enthalpy Changes
  • Sublimation
  • Thermodynamic Properties
  • Transition Temperature

Readers

  • Combustion science or combustion engineering.
  • Molecular Photonics/Laser Physics
  • Organic Chemistry