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Oxidation of Reduced Sulfur Species: Carbonyl Sulfide
Article first published online: 25 APR 2013
© 2013 Wiley Periodicals, Inc.
International Journal of Chemical Kinetics
Volume 45, Issue 7, pages 429–439, July 2013
How to Cite
Glarborg, P. and Marshall, P. (2013), Oxidation of Reduced Sulfur Species: Carbonyl Sulfide. Int. J. Chem. Kinet., 45: 429–439. doi: 10.1002/kin.20778
- Issue published online: 25 APR 2013
- Article first published online: 25 APR 2013
- Manuscript Revised: 15 JAN 2013
- Manuscript Accepted: 15 JAN 2013
- Manuscript Received: 25 OCT 2012
A detailed chemical kinetic model for oxidation of carbonyl sulfide (OCS) has been developed, based on a critical evaluation of data from the literature. The mechanism has been validated against experimental results from batch reactors, flow reactors, and shock tubes. The model predicts satisfactorily oxidation of OCS over a wide range of stoichiometric air–fuel ratios (0.5 ), temperatures (450–1700 K), and pressures (0.02–3.0 atm) under dry conditions. The governing reaction mechanisms are outlined based on calculations with the kinetic model. The oxidation rate of OCS is controlled by the competition between chain-branching and -propagating steps; modeling predictions are particularly sensitive to the branching fraction for the OCS + O reaction to form CO + SO or CO2 + S.