hydrogenation

noun

hy·​dro·​gen·​a·​tion ˌhīdrə̇jə̇ˈnāshən How to pronounce hydrogenation (audio)
hīˌdräjə̇ˈ-
plural -s
: the process of hydrogenating: such as
a
: the addition of hydrogen to the molecule of an unsaturated organic compound usually in the presence of a catalyst (as nickel) and often at elevated temperature and pressure
hydrogenation of benzene to cyclohexane
b
: a decomposition (as of hydrocarbons) at high temperature and pressure with addition of hydrogen to the molecules formed : hydrogenolysis
hydrogenation of coal to gasoline and oils

called also destructive hydrogenation

Word History

Etymology

International Scientific Vocabulary hydrogen + -ation

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Cite this Entry

“Hydrogenation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogenation. Accessed 12 Dec. 2025.

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