Abstract
Electron microscopy was used to study the structure of soot clusters formed is a natural gas diffusion flame in the presence of the electric field of a dc corona discharge. It was demonstrated that the structure of such clusters depends on the electric field strength E and temperature T. As E increases from 0 to 2.3 kV/cm, the specific surface area of soot does so from 90.2 to 347.2 m2/g. The adsorbability of soot with respect to toluene vapor also increases, by a factor of 3. As E and/or T increase, the mean size of soot clusters decreases. The dependence of the mass of soot deposited on the grounded electrode exhibits an extreme character, passing through a maximum at E = 0.8 kV/cm.
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