Bronsted-Polanyi rule

Scheme 4.1 illustrates this relation between change in activation energy 5Eact and change in reaction energy 6Er. According to the Bronsted-Polanyi rule, when there is no change in the reaction path... 

Low Energy Activation in Each Step. In certain cases, the rule is, the better the thermodynamic of the step, the lower the energy activation (Polanyi-Semenov, Bronsted equations, for example). 

The main catalytic influence of the nature of the electrode material is through the adsorption of intermediates of complex electrode reactions. Hortiuti and Polanyi [50] suggested that the activation energy of an electrode reaction should be related to the heat of adsorption of adsorbed intermediates by a relationship of the form of the Bronsted rule in homogeneous solutions. This corresponds to a vertical shift of the potential energy curves by an amount with p a... 

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