A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy without itself undergoing any change. Catalysts make it easier for the reactions to go to the products side, it makes it go a lot faster. Some reactants don't have enough energy to make it over the uncatalyzed reaction pathway, so when a catalyst makes a new reaction pathway more reactants go to the products side, with out all the hassle.
Catalysts help a lot when it comes to industry, 80% of processes in the chemical industry use catalysts. Because it helps make more products faster.…