Activity of the Catalyst, the catalyst can speed up the process. The activity of a catalyst is the name given to this capability. It relies on the reaction's capacity to adsorb. A catalyst can speed up the process. The activity of a catalyst is the name given to this capability. It is reliant on the reactants adhering to the catalyst's surface. The primary factor influencing the activity of catalysts is chemisorption. The catalytic surface and the reactants must create a link during adsorption, but it must not be too strong or too weak. It must be potent enough to activate the catalyst but not so potent as to immobilise the molecules of the reactants on the catalytic surface, preventing the addition of additional reactants. The catalytic activity generally rises for the hydrogenation process from Group 5 to Group 11 metals. The periodic table's group 7-9 elements are determined to have the highest catalytic activity. It is on the catalyst's surface.