Comparisons of the structure of stoichiometric CH4N2OAr and CH4O2Ar flames by molecular beam sampling and mass spectrometric analysis

✍ Scribed by J. Vandooren; M.C. Branch; P.J. Van Tiggelen

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 857 KB
• Volume: 90
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(92)90086-5

✦ Synopsis

Measurements are reported of the profiles of composition and temperature in laminar premixed flat flames of CH4-NzO-Ar and Cna-O2-mr. Measurements were made in near stoichiometric mixtures at 30 torr by molecular beam sampling and mass spectrometric sample analysis. All major stable species and many important unstable species were measured by this technique, many species being identified in the flame with N20 as oxidizer for the first time. Calibration of the concentration profiles was accomplished by the use of calibration gases for stable species and by comparison of the mass spectrometer signal in the wellcharacterized CHa-Oz-Ar flame with signals in the CHa-N20-Ar flame and by partial equilibrium for the hydrogen-oxygen system. The measurements have identified the presence of NCO, HCN, and HNCO as reaction intermediates and the importance of these species in the reaction mechanism is discussed.