S. Irandoust et J. Edvardsson, POISONING OF NICKEL-BASED CATALYSTS IN FAT HYDROGENATION, Journal of the American Oil Chemists' Society, 70(11), 1993, pp. 1149-1156
The influence of various poisoning compounds on the hydrogenation of f
at is reviewed. Sulfur-containing compounds, present in both vegetable
and marine oils, create serious catalyst deactivation problems. In th
is paper, the poisoning efffect of sulfur and its role on the reactant
adsorption in different hydrogenation reactions are discussed. Severa
l factors affecting the sulfur resistance of the catalyst metal are su
mmarized. Other inhibitors influencing the fat hydrogenation, such as
phosphorus compounds, free fatty acids, sodium soaps, chlorophyll, hal
ogen compounds and products of lipid oxidation, are also considered.