Accession Number:

AD0676698

Title:

ION MOLECULE REACTIONS IN FLAMES.

Descriptive Note:

Final Scientific rept.,

Corporate Author:

IIT RESEARCH INST CHICAGO ILL

Personal Author(s):

Report Date:

1968-09-01

Pagination or Media Count:

60.0

Abstract:

Studies of charge recombination and equilibrium were carried out in a number of hydrogen-oxygen flames containing selected additives including CH4, C2H6, C3H8, C4H10, CF4, CF3Cl, and C4F10. Analysis of the experimental data on the basis of the theory of ionization chambers show that 1 although free electrons do constitute the most important negatively charge species, a considerable amount of heavier negative ions do exist in the flames studies in this program as the result of electron capture by oxygen or other molecular species and 2 charge neutralization occurs to an appreciable extent even in the presence of external electric fields capable of collecting apparent saturation currents. In addition, the fact that the introduction of even non-combustible additives such as CF4 could result in increased ion currents apparently due to chemi-ionization processes involving excited carbonaceous intermediates suggests that this phenomenon could well be used for the analysis of such compounds by flame ionization methods. Author

Subject Categories:

  • Physical Chemistry
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE