Experimental coalescence characteristic time of carbon nanoparticle produced from ethylene or benzene pyrolysis

The coalescence behavior of soot and carbon black has not been so much discussed. The coalescence rate was obtained from the previous experimental results which measured the decrease in mobility diameter by re-heating with tandem differential mobility analyzer. Employing the rate expression used for sintering metallic and inorganic nano particles, it was found that the ease of coalescence varied with particle size. It was also suggested that the mechanism of coalescence may differ depending on the temperature. A model of coalescence kinetics based on crystallinity could not represent experimental coalescence kinetics.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

Automated summary

The coalescence behavior of soot and carbon black, as well as its rate, are discussed in this paper. The rate of coalescence is obtained by measuring the decrease in mobility diameter using a tandem differential mobility analyzer. It is found that the ease of coalescence varies with particle size, and the mechanism may differ depending on temperature. However, a coalescence kinetics model based on crystallinity cannot accurately represent the experimental results.