Abstract
Thermophoretic sampling was conducted in buoyancy dominated diffusion flames fueled by ethene, methane and acetylene and in the laminar ethene flame. Small polydisperse singlet particles which are more transparent to the electron beam are found at intermediate temperatures on the fuel side of the flame front in these flames. The particles form agglomerates at the flame front or in the upper regions of the flame. The microparticles conform to the description that has been provided by Wersborg et al. of similar species found in the premixed acetylene flame at low pressures which suggests that they are a common particulate precursor to carbonaceous soot in hydrocarbon flames. It is concluded that the particles are likely to be composed of polyaromatic hydrocarbon compounds, which have been found by others to be present in hydrocarbon flames, and that the precursor particles undergo annealing to form a partially graphitic soot upon exposure to elevated temperatures at the flame front.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
