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Kinetics and mechanism of the oxidation of carbon
Author(s) -
Grabke H. J.
Publication year - 1999
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/(sici)1521-4176(199912)50:12<686::aid-maco686>3.0.co;2-m
Subject(s) - chemistry , oxidizing agent , oxygen , carbon fibers , kinetics , reaction mechanism , medicinal chemistry , organic chemistry , catalysis , materials science , physics , quantum mechanics , composite number , composite material
This short contribution is meant to point out a basic mechanism for the oxidation of different carbons at high temperatures. The rate of carbon oxidation, i.e. CO‐formation, is proportional to a steady state oxygen activity which is established on the carbon surface by the interplay of oxygen transfer reactions and carbon oxidation. This was proven in detail for the reaction of electrode graphite, active charcoal and natural graphite in CO 2 ‐ CO mixtures, where by isotope exchange studies the rate of oxygen transfer could be measured separately [1, 2] but is also valid for other oxidizing atmospheres.