High-temperature pyrolysis of toluene
The thermal decomposition of toluene has been investigated by two independent shock tube techniques: time-of-flight (TOF) mass spectrometry and laser-schlieren densitometry. These studies cover the temperature range 1550-2200 K for pressures 0.2-0.5 atm. C/sub 2/H/sub 2/, C/sub 4/H/sub 2/, CH/sub 4/, and C/sub 7/H/sub 7/ were identified as major species along with lesser amounts of C/sub 2/H/sub 4/, C/sub 6/H/sub 2/, and C/sub 6/H/sub 6/. The laser-schlieren profiles require a dominance by CC scission to phenyl and methyl with a rate constant log k (s/sup -1/) = 12.95-72.6 (kcal)/2.3RT for 1600-2100 K and 0.5 atm. Such dominance is also required to produce the methane seen in the TOF spectra. A mechanisms is proposed which proposed an excellent description of density gradient and major species concentration profiles over this range.
- Research Organization:
- Univ. of New Orleans, LA
- DOE Contract Number:
- FG02-85ER13340; FG02-85ER13384
- OSTI ID:
- 6628546
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:8; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Shock tube investigation of major pathways in the high-temperature pyrolysis of benzene
Experimental and theoretical investigation of the self-reaction of phenyl radicals.
Related Subjects
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKYLATED AROMATICS
AROMATICS
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DENSITOMETERS
DENSITY
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
KINETICS
LOW PRESSURE
MASS SPECTROSCOPY
MEASURING INSTRUMENTS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOMETERS
PHYSICAL PROPERTIES
PYROLYSIS
QUANTITY RATIO
REACTION KINETICS
SHOCK TUBES
SPECTROSCOPY
THERMOCHEMICAL PROCESSES
TIME-OF-FLIGHT METHOD
TOLUENE
VERY HIGH TEMPERATURE