Title
Paramagnetic centers in particulate formed from the oxidative pyrolysis of 1-methylnaphthalene in the presence of Fe(III)O nanoparticles
Document Type
Article
Publication Date
12-1-2013
Abstract
The identity of radical species associated with particulate formed from the oxidative pyrolysis of 1-methylnaphthalene (1-MN) was investigated using low temperature matrix isolation electron paramagnetic resonance spectroscopy (LTMI-EPR), a specialized technique that provided a method of sampling and analysis of the gas-phase paramagnetic components. A superimposed EPR signal was identified to be a mixture of organic radicals (carbon and oxygen-centered) and soot. The carbon-centered radicals were identified as a mixture of the resonance-stabilized indenyl, cyclopentadienyl, and naphthalene 1-methylene radicals through the theoretical simulation of the radical's hyperfine structure. Formation of these radical species was promoted by the addition of Fe(III)O nanoparticles. Enhanced formation of resonance stabilized radicals from the addition of Fe(III)O nanoparticles can account for the observed increased sooting tendency associated with Fe(III)O nanoparticle addition.
Publication Source (Journal or Book title)
Combustion and flame
First Page
2996
Last Page
3003
Recommended Citation
Herring, P., Khachatryan, L., Lomnicki, S., & Dellinger, B. (2013). Paramagnetic centers in particulate formed from the oxidative pyrolysis of 1-methylnaphthalene in the presence of Fe(III)O nanoparticles. Combustion and flame, 160 (12), 2996-3003. https://doi.org/10.1016/j.combustflame.2013.06.025