The Principle of Energetic Correspondence

The Principle of Energetic Correspondence 1. Volcano-Shaped Curves 

Retaining Eqs. (II.9) and (II. 10) we shall now assume the bond energies Q as variable [367). Let us introduce the notations 

E = —q -j- -H u, the slope of the first straight line being 45° and that of the other —45°. The straight lines intercept at the point Z, its coordinates being 

The cases dealt with below refer to those below the Schwab inversion point Eq. (11.12) is also to be taken into consideration. The reaction rate constants run approximately parallel to the heights of the energy barriers E, where E is the absolute value of E. We shall call the reactions limited by the adsorption stage (E = E ) as the first-stage reactions and those limited by the desorption stage (E = E ) as the second-stage ones. 

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The application of the principle of energetic correspondence to the theory of the selection of catalysts consists of use of the equations of multiplet theory (II.9-II.14) and the resultant volcano-shaped curves. 

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