Estimated Reading Time: 9 minutes In this article we will review heterogeneous catalysis and its applications in chemical industry. Catalysis is the phenomenon in which a material known as the catalyst speeds up the pace of a chemical process. The majority of catalytic reactions are heterogeneous. Heterogeneous catalysts have intrinsic benefits over homogeneous catalysts. It is due to their ease of production, handling, separation from the reaction mixture, recovery, and reuse, as well as their stability, low cost, and low toxicity. This review will assist you in gaining fundamental knowledge of heterogeneous catalysis.