abstract:Catalyst poisoning refers to the effect that a catalyst can be 'poisoned' if it reacts with another compound that bonds chemically to its active surface sites. This may have two effects: the total number of catalytic sites or the fraction of the total surface area that has the capability of promoting reaction always decreases, and the average distance that a reactant molecule must diffuse through the pore structure before undergoing reaction may increase.
Theharmsof sulfidescome from many aspectstopetroleumrefiningandproductapplication, e. g.erodingmetallicequipment, makingcatalystpoisoning, affecting onproducts output.