Methods involving a reference temperature

Mention of the approach given by van Krevelen et al. [529,530] has already been made. Other methods based on points of inflection have been described but in some treatments it would seem probable that the integration constant has been omitted [559]. Doyle s treatment [533] avoids this error by using a characteristic temperature, 0 = T— Tm, where Tm is the temperature at which the reaction rate reaches a maximum. Doyle writes 

However, Doyle has also given a relationship of this form using constants C and / (Sect. 6.2.2) and the single term expansion of Coats and Redfem [555] gives 

Using appropriate rate equations in the above expressions, it is possible to determine the value of E. 

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