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There are two initiation steps involved in the combustion of dimethyl ether (DME), one involving C-O bond fission and the other involving hydrogen abstraction by molecular oxygen. The kinetics and thermodynamics of C-O bond fission were explored computationally in a previous paper. The present paper addresses the competing process-hydrogen abstraction by molecular oxygen. Ab initio molecular orbital...
Laser-induced fluorescence (LIF) of CF2 radicals in atmospheric diffusion flames is reported for the first time. When a CH4 flame is premixed with HCFC-22 (CCIF2H) or HFC-134a (CF3CFH2), fluorescence spectra between 250 and 314 nm of the Ã1B1–X̃1A1 transition from CF2 are observed when the flame is probed by a KrF laser. When these two halocarbons are added to an atmospheric H2 flame, similar LIF...
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