Verb 1. combine or treat with or expose to hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound) (antonym) dehydrogenate (hypernym) change, alter, modify (derivation) hydrogen, H, atomic number 1
Hydrogenate Definition from Encyclopedia Dictionaries & Glossaries
Hydrogenation – to treat with hydrogen – is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to reduce or saturate organic compounds. Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule, generally an alkene. Catalysts are required for the reaction to be usable; non-catalytic hydrogenation takes place only at very high temperatures. Hydrogenation reduces double and triple bonds in hydrocarbons.