High-temperature pyrolysis of ketene in shock waves

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Combustion and Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(94)90079-5· OSTI ID:6908686

Hidaka, Yoshiaki; Kimura, Kenichi; Kawano, Hiroyuki ^[1]

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1. Ehime Univ., Matsuyama (Japan). Dept. of Chemistry

Ketene and/or ketyl radical are produced in a combustion reaction of acetylene and they play a role in the combustion reaction of acetylene. The high temperature pyrolysis of ketene was studied behind reflected shock waves using both a time-resolved UV-absorption method (200 nm) and a single-pulse method (reaction time between 1.7 and 2.1 ms). The studies were done for the mixtures of 0.26% ketene and 2.2% ketene diluted with Ar in the temperature range 1102-1921 K at a total pressure range of 1.2--2.7 atm. From a computer-simulation study, a 38-reaction mechanism for the high temperature pyrolysis of ketene was developed. The mechanism and the rate-constant expressions were arrived at that could explain all the current data and previously reported data. It was found that 7 reactions played a role in the ketone consumption. The rate constant expressions of six reactions over the temperature range 1,102--1,921 K were estimated by using simulation.

• OSTI ID: 6908686
• Journal Information: Combustion and Flame; (United States), Journal Name: Combustion and Flame; (United States) Vol. 99:1; ISSN CBFMAO; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ACETYLENE
ACTIVATION ENERGY
ALKYNES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION KINETICS
COMPUTERIZED SIMULATION
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ENERGY
HYDROCARBONS
KETENES
KINETICS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PYROLYSIS
RADIATIONS
REACTION KINETICS
SIMULATION
THERMOCHEMICAL PROCESSES
ULTRAVIOLET RADIATION