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Some aspects of kinetics and mechanism of the oxidative coupling of methane
Author(s) -
Sohrabi Morteza,
Dabir Bahram,
Eskandari Asghar,
Golpasha Rahmatolah D.
Publication year - 1996
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199609)67:1<15::aid-jctb524>3.0.co;2-u
Subject(s) - oxidative coupling of methane , methane , chemistry , catalysis , oxygen , reaction mechanism , kinetics , partial pressure , kinetic energy , coupling (piping) , mechanism (biology) , thermodynamics , chemical kinetics , photochemistry , materials science , organic chemistry , physics , quantum mechanics , metallurgy
Kinetic studies on the oxidative coupling of methane at 760, 770 and 780°C have been conducted in a differential tubular flow reactor, using perovskite titanate as the reaction catalyst. Correlation of the kinetic data has been performed with the mechanisms proposed. At low oxygen partial pressure, the experimental results best fitted the Mars–Van Krevelen type mechanism, whereas at higher partial pressure of oxygen, a Langmuir–Hinshelwood type model provided the best fit to the data. A model for the rate of reaction has been derived assuming methyl radical as the intermediate.