, Volume 32, Issue 7, pp 400-405

Isomerization during hydrogenation. I. Oleic acid

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It was found that during the hydrogenation of octadecenoic acids, migration of the double bonds takes place equally in each direction. The positional isomers that are formed are composed of the 1∶2 equilibrium mixture ofcis andtrans. A partial hydrogenation-dehydrogenation theory may be applied to explain the simultaneous formation of both positional and geometrical isomers.

Presented at the annual spring meeting of the American Oil Chemists' Society, San Antonio, Tex., Apr. 12–14, 1954.