High temperature pyrolysis of methane in shock waves. Rates for dissociative recombination reactions of methyl radicals and for propyne formation reaction

✍ Scribed by Yoshiaki Hidaka; Takuji Nakamura; Hiroya Tanaka; Koji Inami; Hiroyuki Kawano

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 503 KB
• Volume: 22
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550220706

✦ Synopsis

The pyrolysis of 2% CHI and 5% CHI diluted with Ar was studied using both a single-pulse and time-resolved spectroscopic methods over the temperature range 1400-2200 K and pressure range 2.3-3.7 atm. The rate constant expressions for dissociative recombination reactions of methyl radicals, CH, + CH3 + C2H, + H and CH, + CH3 + C2H4 + Ha, and for C,H4 formation reaction were investigated. The simulation results required considerably lower value than that reported for CH3 + CH, -+ C2H4 + H2. Propyne formation was interpreted well by reaction C2H, + CH, -+ p-C,H, + H with k = 6.2 x 10'' exp(-17 kcal/RT) cm3 mol-' s-'.