I have seen in several papers, where people correlate adsorption energy with the catalytic activity; the greater the adsorption energy, the greater would be the catalytic activity.
I understand that in order for a catalytic reaction to take place, the adsorbates should get adsorbed on the surface of the catalyst. But what if the adsorbates are too strongly adsorbed on the catalyst. This is unfavorable for the reaction. Isn't it?
Therefore, I don't understand how one can correlate higher adsorption energies with greater catalytic activity.