Pressure dependence of unimolecular reactions: Collision efficiencies in mixtures of weak and strong colliders

In practical applications such as combustion studies, prediction of the pressure dependence of unimolecular reaction steps is made more difficult by the great variety of conditions (pressure, temperature and composition) arising in the medium. A general scheme for the treatment of pressure dependenc...

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Bibliographic Details
Published in:Chemical physics letters 1989-09, Vol.161 (4), p.432-438
Main Authors: Schranz, Harold W., Nordholm, Sture, Andersson, Lars L.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:In practical applications such as combustion studies, prediction of the pressure dependence of unimolecular reaction steps is made more difficult by the great variety of conditions (pressure, temperature and composition) arising in the medium. A general scheme for the treatment of pressure dependence is needed. Here we investigate the pressure dependence of the collision efficiencies of weak colliders in a multicomponent medium. An extrapolation method is presented which can account for such pressure dependence by reference to single-component data. The scheme is tested on a model for the decomposition of ethane in a mixture of a strong and a weak collider.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(89)85111-5