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Chemical interpretation of cool flame behaviour

When there are several episodes of cool flames the reaction is oscillatory. The crucial feature is the reversible reaction [Pg.257]

For mixtures between b and c luminescence would appear in the vessel, the temperature and pressure would show a sudden jump and there would be an audible click. This is the cool flame region, where degenerate branching becomes dominant. If not all the reactant is used up in the first cool flame [Pg.258]

When the initial temperature lies between p and q all mixtures will explode. [Pg.259]

For initial temperatures between q and r a cool flame region exists, but, in contrast to region n, p, the overall rate must decrease with increasing temperatures since at r reaction enters the steady state region. Between q and r reaction has a negative temperature coefficient. [Pg.259]

For initial temperatures between r and s reaction is again in the steady state with straight chain propagation dominant, but for temperatures greater than s explosion occurs. [Pg.259]


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