What is meant by hydrogenation of vegetables oil ?
Hydrogenation of vegetable oils means that molecular hydrogen in reacted with unsaturated vegetable oils to provide vegetable oils which are partially or fully saturated. It means to reduce or remove double bonds bonds present in the oil. This process is carried out in the presence of a catalyst. Hydrogenation of vegetable oils produces vegetable oils which have higher melting point.
R= hydrogen atom or an alkyl group
Catalysts used are generally platinum, palladium, raney nickel
R2 C=CR2 + H → R2 CH-CHR2