dehydrogenation

chemical reaction

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June 25, 2026

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Dehydrogenation is a chemical reaction where hydrogen is removed from a compound. This process is the opposite of hydrogenation, which involves adding hydrogen. Dehydrogenation is often coupled with cyclization, a process where a ring structure is formed within a molecule, and this combined process is called dehydrocyclization.123

This type of reaction is important in various industrial applications, particularly in the petroleum industry for transforming hydrocarbons. Transition metals, such as chromium, are frequently used as catalysts to facilitate these reactions.24

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combustion
Special aspects
…into extremely large groupings, and dehydrogenation, a process that eliminates hydrogen from molecules.
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…into extremely large groupings, and dehydrogenation, a process that eliminates hydrogen from molecules.
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elimination reaction
…the reaction is known as dehydrogenation. Elimination reactions are also classified as E1 or E2, depending on the reaction kinetics. In an E1 reaction, the reaction rate is proportional to the concentration of the substance to be transformed; in an E2 reaction, the reaction rate is proportional to the concentrations…
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…the reaction is known as dehydrogenation. Elimination reactions are also classified as E1 or E2, depending on the reaction kinetics. In an E1 reaction, the reaction rate is proportional to the concentration of the substance to be transformed; in an E2 reaction, the reaction rate is proportional to the concentrations…
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metabolism
The nature of the respiratory chain
…catabolic intermediates initially undergo a dehydrogenation reaction, during which a dehydrogenase enzyme transfers the equivalent of a hydride ion (H⁺ + 2e⁻, with e⁻ representing an electron) to its coenzyme, either NAD⁺ or NADP⁺. The reduced NAD⁺ (or NADP⁺) thus produced (usually written as NADH + H⁺ or NADPH +…
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…catabolic intermediates initially undergo a dehydrogenation reaction, during which a dehydrogenase enzyme transfers the equivalent of a hydride ion (H⁺ + 2e⁻, with e⁻ representing an electron) to its coenzyme, either NAD⁺ or NADP⁺. The reduced NAD⁺ (or NADP⁺) thus produced (usually written as NADH + H⁺ or NADPH +…
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