Refined and bleached cottonseed oil was dissolved in a solvent (hexane, isopropyl alcohol, or di-isoproIty] ether) and was then hydrogenated in a dead-end hydrogen'ltor. Hydrogenation runs were conducted at temperatures from 115 to 145°C., at hydrogen partial i)ressures from 44 to 74 p.s.i.a., with catalyst eonecntra tlons varying, from 0.05 to 0.40% nickel, and at high rates of agitation to eliminate mqss-transfer resistances. A series of hydrogenation runs was also made ill which no solvent was used.Tile rates of hydrogenation for the v~lrious series of runs were in. the same order of magnitude but deereased in the following order: nonsolvent, hexane, isoprol)y[ ah;ohol, and di-isopropyl other runs, Selectivity and isom(;rization were low in all cases and essentially identie'd for solvent and nonsolvent runs.The rate of hydrogenation increased in all eases with higher catalyst con('entrations. For the isoprollanol runs, the reaction rate was ni3xiniuui as a function of tellillerature
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