Your question is not clear enough. People usually introduce specific structural changes then study their effect on the reaction products, rate, ..., and so on.
Are you asking about organic reactions or about inorganic reactions?
Dear Dr. Khaleel A Abu-Sbeih thanks for your valuable time and suggestion. My question is regarding both organic and inorganic reaction. In catalysis we come across reactions which are independent of the structure/exposed plane of the catalyst whereas there are reactions which are highly dependent on the structure of the catalyst and gives different activity with different exposed planes. What makes any reaction so sensitive to the catalyst structure and how to predict it ?
Reactions on the solid surfaces are highly dependent on how the surface is prepared. Since adsorption on the surface is the first step in the reaction, it needs to be facilitated to make the reaction faster.
Therefore, you need to make irregularities in the surface such as kinks, steps, pits, and so on. These irregularities make adsorption much easier, unlike a smooth surface which makes adsorption much more difficult.
There are different ways to introduce irregularities, including mechanical, physical, and chemical methods.
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