STUDY OF HYDROCARBON COMBUSTION AT LOW PRESSURE IN AN ELECTRIC FIELD

Influence of a constant electric field of different polarity on sootformation process, yield and structure of soot particles, on yield of fullerenes in a range of pressure U=0.5 … 20 kV at burning of benzene vapours in the environment of oxygen at atomic ratio С/О=1.0 with addition of 10 % of argon on volume, at pressure in system Р=40 Torr is investigated. The analysis of obtained results has shown, that influence of external electric field under certain conditions can increase yield of soot (up to 10 %) in comparison with yield without applying electric field. It is found that for soot particles most typical the normal law of distribution with dislocation in the zone of equilibrium for negative polarity at pressure U³20 кV. The electric field, as a whole, promotes growth of the average size soot particles in comparison with the average size of particles received without field influence. It is established, that the length of diameter soot package L_a is subject to greater change aside increases, than its height L_с, at voltage change. Fullerenes C₆₀, С₇₀ and PAH are identified in extracts of soot by the method of IR-spectroscopy. It is established, that yield of fullerenes significantly starts to grow (a³13%) at applying on flame of electric field in the abnormal glow discharge area. The analysis of X-ray photogram of soot samples dry extracts showed presence of peaks, characteristic for fullerenes C₆₀ and C₇₀. Peaks correspond to following crystal phases of fullerenes: orthorhombic, cubic and hexagonal (C₇₀ only hexagonal).