Analysis of the proportionality factor in the compensation effect

Isoparametric kinetic relations for chemical transformations in condensed substances (Analytical survey). II. Reactions involving the participation of solid substances

“…Correlation (2) between apparent activation parameters for a group of reactions of the same type, characterized by similar or close values of the true activation parameters, has been analysed in [22]. It is shown that the reaction temperature range defined by the true values of E and A corresponds to such a group.…”

“…how far it is from the equilibrium state when the reaction proceeds in the temperature range typical for it: in fact, it is related to the position of this range on the temperature scale [22]. The value of B for the reactions of this type is close to zero i '4, 16, 17].…”

“…On the whole, these constants are different for one and the same reaction in the melt and in the solid phase (2); polymorphic transformation (SrCO3) does not upset the CE during thermolysis [4,25]. The fact that the temperature of the corresponding e is in the experimental temperature range may be an indication ofan apparent CE [1,22]. On the other hand, the experimental isoparametric point that can be reached as mentioned above [1] is a most reliable criterion for the observance of CE-type relations.…”

“…The importance of molecular mobility in the kinetics of polymer reactions is reported in [48,49]. [22,24,[50][51][52][53][54] compare the IR for isothermal conditions and for a linear rise in the temperature most widely used in thermal analysis, and describe their agreement. In the absence of such agreement, the conclusion is made that some version of the thermal analysis conditions cannot be correct [24].…”

“…Just as in many cases thus far considered [1], the CE in nonisothermalkinetics can be interpreted as approximate coincidence of the temperature ranges of reactions of the same type [22,127] or of the corresponding peak maxima (Tin) [128] on the temperature scale. If the reaction rate constants are close in value a T m, this corresponds to partially satisfied isokineticity.…”