Abstract
The homogeneous hydrogenation of cottonseed oil in n-hexane by using binary catalyst system of Ziegler type, nickel acetylacetonate [Ni (acac) 2] and triethylaluminium (Et3Al), was performed at low temperatures down to -20°C where saturated or less soluble glycerides were crystallized out of the reacting solution. No one has who heretofore been known explored such a reaction process and it might be called hydrogenation with simultaneous crystallization or H.S.C. in abbreviation to distinguish it from the usual hydrogenation process.
In this paper, various chemical and physical properties of cake and filtrate fractions produced by the H.S.C. process were examined. Futhermore the cake fractions mentioned above were subjected to the acetone solvent fractionation to produce the fat as filtrate having properties like hard butter which is characterized by the particularly sharp melting point of about body temperature. As the result, the total yield of the desired product was around 60% when the solvent fractionation was properly combined with the H.S.C. at lower temperature.
