Direct determination of atom and radical concentrations in thermal reactions of hydrocarbons and other gases. Progress report, January 1-December 31, 1984

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5894948

Skinner, G B; Rao, V S; Wood, D R

To permit measurements at pressures substantially lower than 2 to 3 atmospheres, in order to study unimolecular falloff, we added an extension to our tube so that measurements could be made behind incident waves. We have studied several reaction systems behind incident waves. These include C/sub 6/D/sub 6/, and also C/sub 6/H/sub 5/Cl and C/sub 6/H/sub 5/Br, which dissociate to form phenyl radicals. A preliminary kinetic analysis suggests that rate constants for benzene and phenyl dissociation both fall off by a factor of about 2 as the total pressure drops from 3 to 0.4 atm. The dissociation of toluene-d/sub 8/ was also studied. We have also been studying dissociation of deuterium substituted propenes at low pressures. Two reactions that involve the vinyl radical were also studied at low pressures. Vinyl bromide was dissociated, the results again showing the presence of two dissociation channels. In the second system, H atoms produced by dissociation of toluene were reacted with C/sub 2/D/sub 2/, the concentrations of both H and D being monitored. We have completed a paper based on measurements made some time ago of N atom line shapes. (PLG)

• Research Organization: Wright State Univ., Dayton, OH (USA)
• DOE Contract Number: AC02-76ER02944
• OSTI ID: 5894948
• Report Number(s): DOE/ER/02944-9; ON: DE86009928
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKENES
ALKYL RADICALS
ALKYLATED AROMATICS
AROMATICS
BENZENE
BROMINATED AROMATIC HYDROCARBONS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
DECOMPOSITION
DEUTERIUM
DISSOCIATION
ELEMENTS
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
KINETICS
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PROPYLENE
PYROLYSIS
RADICALS
REACTION KINETICS
RESEARCH PROGRAMS
SHOCK WAVES
STABLE ISOTOPES
THERMOCHEMICAL PROCESSES
TOLUENE
VINYL RADICALS
YIELDS