Accession Number : AD0712531

Title :   THE OXIDATION OF CARBON MONOXIDE/METHANE MIXTURES IN SHOCK WAVES.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DEPT OF CHEMISTRY

Personal Author(s) : Dean,A. M. ; Kistiakowsky,G. B.

Report Date : AUG 1970

Pagination or Media Count : 34

Abstract : CO/O2/Ar mixtures with mole fractions of 4%/2%/94% and containing 180 or 500 ppm CH4 were investigated in incident shock waves at about 5 x 10 to the 17th particles/cc total concentration. The reaction was followed by measuring infrared emissions from CO2 and CO for about 1500 microsec particle time over the temperature range 1750 -2575K. The rate of CO2 production initially increased exponentially and then became constant after several percent conversion. It was possible to quantitatively describe the observations in terms of a mechanism. Methane was found to be more effective than either H2 or H2O in promoting the branching chain oxidation of CO. Extending these observations, it is shown that extremely small concentrations of organic compounds can strongly influence many features of the CO/O2 system. (Author)

Descriptors :   (*CARBON MONOXIDE, *OXIDATION), (*METHANE, OXIDATION), (*COMBUSTION PRODUCTS, REACTION KINETICS), HYDROCARBONS, OXYGEN, FORMALDEHYDE, COMBUSTION, SHOCK WAVES, FREE RADICALS

Subject Categories : Organic Chemistry
      Physical Chemistry
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE