Dehydrogenation is a chemical reaction that involves the elimination of hydrogen (H₂). Hydrogen (ˈhaɪdrədʒən is the Chemical element with Atomic number 1 It is the reverse process of hydrogenation. Hydrogenation is the Chemical reaction that results in addition of Hydrogen (H2 Dehydrogenation reactions may be either large scale industrial processes or smaller scale laboratory procedures.

There are a variety of classes of dehydrogenations:

• Aromatization - Six-membered alicyclic rings can be aromatized in the presence of hydrogenation catalysts, the elements sulfur and selenium, or quinones (such as DDQ). An alicyclic compound is an Organic compound that is both Aliphatic and cyclic Sulfur or sulphur (ˈsʌlfɚ see spelling below) is the Chemical element that has the Atomic number 16 Selenium (səˈliniəm is a Chemical element with the Atomic number 34 represented by the chemical symbol Se, an atomic mass of 78 "DDQ" redirects here DDQ is also the former callsign of a TV station in Toowoomba Queensland Australia "DDQ" redirects here DDQ is also the former callsign of a TV station in Toowoomba Queensland Australia
• Oxidation - The conversion of alcohols to ketones or aldehydes can be effected by metal catalysts such as copper chromite. In Chemistry, an alcohol is any Organic compound in which a Hydroxyl group ( - O[[hydrogen H]]) is bound to a Carbon A ketone (pronounced as key tone) is either the Functional group characterized by a Carbonyl group (O=C linked to two other Carbon atoms or An aldehyde is an organic compound containing a terminal Carbonyl group. Copper chromite is a complex inorganic composition Cu2Cr2O5 but often containing barium oxide that is used to catalyse certain reactions in Organic In the Oppenauer oxidation, hydrogen is transferred from one alcohol to another to bring about the oxidation. Oppenauer oxidation, named after Rupert Viktor Oppenauer, is a gentle method for oxidizing secondary Alcohols to Ketones The
• Dehydrogenation of amines - amines can be converted to nitriles using a variety of reagents, such as IF₅. Amines are Organic compounds and Functional groups that contain a basic Nitrogen Atom with a Lone pair. A nitrile is any Organic compound which has a - C ≡ N Functional group. A reagent or reactant is a substance or compound consumed during a Chemical reaction.
• Dehydrogenation of paraffins and olefins - paraffins like n-pentane and isopentane can be converted to pentene and isoprene. In chemistry paraffin is the common name for the Alkane Hydrocarbons with the general formula C n H2 n +2 In Organic chemistry, an alkene, olefin, or olefine is an unsaturated Chemical compound containing at least one Carbon Pentane is any or one of the Organic compounds with the formula C5H12 Isopentane, C5[[hydrogen H12]] also called methylbutane or 2-methylbutane, is a branched-chain Alkane with five Cis-2-pentenesvg|thumb|Cis-2-pentene]] Pentene refers to all the Alkenes with Chemical formula 510 containing a single Double bond Isoprene is a common synonym for the chemical compound 2-methylbuta-13-diene

Dehydrogenation converts saturated fats to unsaturated fats.

References

• Advanced Organic Chemistry, Jerry March, 1162-1173.

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