Singlet methylene removal by saturated and unsaturated hydrocarbons

• Published in: Combustion and flame 1995-03, Vol.100 (4), p.653-660
• Main Authors: Hayes, Frances, Gutsche, Greg J., Lawrance, Warren D., Staker, Warren S., King, Keith D.
• Format: Article
• Language: English
• Subjects: Applied sciences; Combustion of gaseous fuels; Combustion. Flame; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Theoretical studies. Data and constants. Metering
• ISSN: 0010-2180; 1556-2921
• DOI: 10.1016/0010-2180(94)00149-M

The technique of laser flash phyotolysis/laser absorption has been used to obtain absolute removal rate constants for singlet methylene, 1CH 2 ( a ̃ 1A 1 ), with various saturated and unsaturated hydrocarbons. The removal rate constants for CH 4, C 2H 6, C 3H 8, C 2H 4, C 3H 6, C 2H 2, CH 2CCH 2, and C 6H 6 were found to be in excellent agreement with previously reported results. Removal rate constants were also measured for n-C 4H 10, i-C 4H 10, n-C 5H 12, c-C 3H 6, c-C 6H 12, 1-C 4H 8, cis-2-C 4H 8, trans-2-C 4H 8, and 1-C 4H 6, and determined to be (3.17 ± 0.15), (2.53 ± 0.11), (3.35 ± 0.24), (1.63 ± 0.08), (3.77 ± 0.21), (3.80 ± 0.20), (3.67 ± 0.16), (3.43 ± 0.16) and (4.05 ± 0.18) × 10 −10 cm 3 molecule −1 s −1, respectively. This series of hydrocarbons forms the basis of a larger series of compounds containing a wide variety of organic functional groups. The removal rate constants are reported here, both as a series within its own right, and as a reference point for future work.