Hydrogenation is a chemical reaction in which hydrogen gas is added to unsaturated compounds, such as alkenes or alkynes, to produce saturated compounds, such as alkanes. This process typically requires a catalyst, such as platinum or palladium, to facilitate the reaction. Hydrogenation is commonly used in the food industry to produce fats and oils, as well as in the chemical industry to produce a wide range of products, including pharmaceuticals, plastics, and fuels. Additionally, hydrogenation is an important process in the production of renewable fuels and chemical feedstocks from biomass sources.