Catalysis is a branch of chemistry that studies the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. A catalyst is a substance that speeds up the reaction without being consumed in the process, therefore enabling the reaction to occur more rapidly and with lower energy input. Catalysis plays a crucial role in various industrial processes, such as the production of chemicals, fuels, and pharmaceuticals, as well as in environmental remediation and alternative energy sources. Researchers in the field of catalysis aim to develop more efficient and sustainable catalysts, understand the mechanisms of catalytic reactions, and improve overall reaction rates and selectivity.