What is hydrogenation?

  • (noun): A chemical process that adds hydrogen atoms to an unsaturated oil.
    Example: "Food producers use hydrogenation to keep fat from becoming rancid"


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. 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. Hydrogen adds to double and triple bonds in hydrocarbons.

Read more about Hydrogenation.

Some articles on hydrogenation:

Organocatalytic Transfer Hydrogenation
... Organocatalytic transfer hydrogenation has been described by the group of List in 2004 in a system with a Hantzsch ester as proton donor and an amine catalyst Extending the scope of this reaction towards ... It is noted that with most traditional metal based catalysts, hydrogenation of aromatic or heteroaromatic substrates tend to fail ...
Migratory Insertion - Insertion of Alkenes Into M-H Bonds
... The insertion of alkenes into metal-hydrogen bonds is a key step in hydrogenation and hydroformylation reactions ... In hydrogenation, the resulting alkyl ligand combines with a second hydride to give the alkane ... Analogous reactions apply to the hydrogenation of alkynes a alkenyl ligand combines with a hydride to eliminate an alkene ...
Equipment Used For Hydrogenation - Industrial Reactors
... Catalytic hydrogenation is done in a tubular plug-flow reactor (PFR) packed with a supported catalyst ... loading is typically much lower than in laboratory batch hydrogenation, and various promoters are added to the metal, or mixed metals are used, to improve activity, selectivity and catalyst stability ... are also used for carrying out catalytic hydrogenation ...
Transfer Hydrogenation
... Transfer hydrogenation is the addition of hydrogen (H2 dihydrogen in inorganic and organometallic chemistry) to a molecule from a source other than ... One large scale application of transfer hydrogenation is coal liquefaction using "donor solvents" such as tetralin ...
Cluster Chemistry - Stereodynamics of Clusters - Appendix: Examples of Reactions Catalysed By Transition Metal Carbonyl Clusters
... hydroformylation Rh Rh4(CO)10+x(PPh3)2-x (x=0,2) CO hydrogenation Ru-Os H2RuOs3(CO)13 CO hydrogenation Ru-Co RuCo2(CO)11 CO hydrogenation Ir Ir4(CO)12 CO hydrogenation Fe Fe3(CO)12 ...