Hydrogenation of fatty oils with palladium catalysts. V. Products of the tall oil industry

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Abstract
Conditions were found for reducing tall oil distillate to an iodine number of 22 with a sufficiently small amount of palladium catalyst to make the process commereially feasible. The operating conditions were 200°C and 2,600 psi.Tall oil fatty acids were reduced with palladium and the concentration of linoleic acid,cis‐oleic acid, saturated acid, andtrans isomers were determined as a function of iodine number. The five‐platinum group metals (Pt, Pd, Ir, Rh, Ru) were compared as to activity, selectivity of partial hydrogenation, and tendeney to formtrans‐isomers.