A shock tube, laser-schlieren study of propene pyrolysis at high temperatures

Journal Article · Fri Jan 01 04:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100394a043· OSTI ID:7059980

Kiefer, J H; Al-Alami, M Z; Budach, K A

Laser-schlieren, shock tube methods have been used to determine the rate of initiation in propene pyrolysis. Given that the dominant initiation reaction is M + C/sub 3/H/sub 6/ ..-->.. CH/sub 3/ + C/sub 2/H/sub 3/ + M, the rate constant over 1650-2300 K and 1 x 10/sup -6/ < (M) < 2.2 x 10/sup -6/ mol/cm/sup 3/ is 5.4 x 10/sup 75/T/sup -//sup 15.7/ exp(-120000/(RT)) cm/sup 3//(mol s)(R in cal/(mol K)). There is no clear difference between C/sub 3/H/sub 6/ and Kr as M. This rate was obtained by a computer simulation assisted extrapolation to the presumed instant of shock heating ( t = O) and the derivation of an initial rate by using calculated frozen reaction conditions. This rate is in reasonable agreement with previous single-pulse shock tube measurements, and suggests that the reaction is in the falloff region in all the shock-tube studies. A possible contribution by C/sub 3/H/sub 6/ ..-->.. C/sub 3/H/sub 5/ + H cannot be excluded.

• Research Organization: Univ. of Illinois at Chicago Circle
• DOE Contract Number: AC02-78ER04759
• OSTI ID: 7059980
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:5; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400301* -- Organic Chemistry-- Chemical &amp; Physicochemical Properties-- (-1987)
400600 -- Radiation Chemistry
400800 -- Combustion
Pyrolysis
&amp; High-Temperature Chemistry
ALKENES
CHEMICAL REACTIONS
CONCENTRATION RATIO
DATA
DECOMPOSITION
DENSITY
DIAGRAMS
DIFFERENTIAL EQUATIONS
EQUATIONS
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
LASERS
MEDIUM PRESSURE
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOGRAPHY
PHYSICAL PROPERTIES
PROPYLENE
PYROLYSIS
SCHLIEREN METHOD
SHOCK TUBES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
VERY HIGH TEMPERATURE