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- W2616458688 abstract "The formation of soot particles during the combustion of hydrocarbon fuel relates to the incomplete combustion. The degree of chemical unburnt can reach 10–15%. The paper studies the soot extinction in hydrocarbon flames. Soot particles can reveal itself as a homogeneous structure or contain multiple functional groups bound to the carbon skeleton. The presence of molecules and their fragments or other chemical bonds in the substance was determined by Fourier Transform Infrared Spectrometer FTIR-1201. Spectrograms of analyzed samples were recorded in the range of 4000 cm -1 to 400 cm -1 . Strong absorption in a wide spectral range of 4000 cm -1 to 500 cm -1 is typical to the soot samples of saturated hydrocarbons. Radiation absorption by radicals С = С, СН, СН 2 , СН 3 in a spectral range of 3000 cm -1 to 1000 cm -1 and hydroxyl OH-group in a spectral range of 3600 cm-1 to 3200 cm-1 is typical to the soot samples of aromatics. The paper detects some nanostructures as С60 (ν = 1430 cm -1 ) and С70 (ν = 1460 cm -1 ). Carbon nano-tubes grown by catalytic methane as defect-free structure have high transparency. Strong absorption lines by С = С, СН, СН 2 , СН 3 were observed in the range of 1800 cm -1 to 1000 cm -1 . Soot particles are the main radiator in the IR-region which determines flame’s emission ability. During thermal exposure (afterburning), active centers were identified in the soot particles ensemble, along with their location and the nature of their structure. Soot particles with more developed surface have a shorter induction time of reacting with oxygen in the air and are more active. The induction time of active centers in highly disperse soot is much higher." @default.
- W2616458688 created "2017-05-26" @default.
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- W2616458688 date "2017-01-01" @default.
- W2616458688 modified "2023-09-27" @default.
- W2616458688 title "EXTINCTION IN THE SOOT PARTICLES ENSEMBLE" @default.
- W2616458688 doi "https://doi.org/10.15518/isjaee.2017.10-12.086-093" @default.
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