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Experimental determination of the equilibrium constant of the reaction CH 3 + O 2 ⇄ CH 3 O 2 during the gas‐phase oxidation of methane
Author(s) -
Khachatryan L. A.,
Niazyan O. M.,
Mantashyan A. A.,
Vedeneev V. I.,
Teitel'boim M. A.
Publication year - 1982
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550141107
Subject(s) - chemistry , methane , equilibrium constant , atmospheric temperature range , reaction rate constant , gas phase , analytical chemistry (journal) , thermodynamics , kinetics , organic chemistry , physics , quantum mechanics
For the experimental determination of the equilibrium constant of the reaction CH 3 + O 2 ⇄ CH 3 O 2 (1), the process of methane oxidation has been studied over the temperature range of 706–786 K. The concentration of CH 3 O 2 has been measured by the radical freezing method, and that of CH 3 from the rate of accumulation of ethane, assuming that C 2 H 6 is produced by the reaction CH 3 + CH 3 → C 2 H 6 (2). The equilibrium constant of reaction (1) has been obtained at four temperatures. For the heat of the reaction the value Δ ˚H 298 = ‐32.2 ± 1.5 kcal/mol is recommended.