Year-end Sale % OFF 
Abstract
The thermodynamic methods of the Arrhenius and Achar-Brindley-Sharp-Wendworth are employed to investigate the influence of the heating rate on oxidation characteristics of three carbon samples. High resolution transmission electron microscopy, Raman spectroscopy, and specific surface area measurements using Brunauer–Emmett–Teller theory are applied to evaluate the influence of the graphitization degree, the microcrystalline length, and the microstructure on the oxidation of carbon black. The results show that with the increase in heating rate, the reaction rate of carbon black increases and the oxidation activation energy gradually decreases; the fitted values of the activation energy range from 136.4 to 221.3 kJ mol−1 with the heating rate is <100 K min−1. Besides, the evaporation and oxidation of simulating soluble organic fractions absorbed on carbon samples can change its internal microstructure, which could influence carbon oxidation. All experimental results indicate that carbon black would sequentially take those steps during oxidation: volatile substance evaporation or oxidation, amorphous carbon oxidation, graphitization, and combustion finally.
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.
