Accession Number:

ADA027649

Title:

Chemical Kinetics of Some Elementary Reactions of Oxygen Atoms.

Descriptive Note:

Final rept. 1 Jun 72-29 Feb 76,

Corporate Author:

CATHOLIC UNIV OF AMERICA WASHINGTON D C DEPT OF CHEMISTRY

Personal Author(s):

• Timmons,Richard B.

Report Date:

1976-06-01

Pagination or Media Count:

15.0

Abstract:

The research studies involved the investigation of the kinetics and mechanism of selected gas phase reactions of ground state oxygen atoms. All of the reactions studied are of either direct or indirect interest with respect to oxidative processes which occur in the atmosphere. Each reaction was studied over wide temperature ranges using fast flow apparatus coupled with electron spin resonance andor mass spectrometric detection methods. In some cases, with CH3CN and CF3CN it was necessary to use the flash photolysis-resonance fluorescence method in order to avoid the problem of free radial chain reactions observed under typical flow tube conditions. The specific rate constants obtained are expressed in terms of the usual Arrhenius equation. The specific applications of these results to environmental chemistry are discussed in this report.

Descriptors:

• *REACTION KINETICS
• *OXYGEN
• MOLECULES
• ATOMS
• ELECTRON SPIN RESONANCE
• CHEMICAL REACTIONS
• OZONE
• ATMOSPHERIC CHEMISTRY
• MASS SPECTROMETRY

Subject Categories:

• Atmospheric Physics
• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE