Catalytic Transfer Hydrogenation of Low-erucic-acid Rapeseed Oil over a Ni-Ag _0.15/SBA15 Catalyst

The kinetics of CTH of low-erucic-acid rapeseed oil using ammonium formate as a hydrogen donor over a Ni-Ag0.15/SBA15 catalyst were studied. Then, a kinetic model for the hydrogenation of low-erucic-acid rapeseed oil was established, and it was found that the reaction rate constants of hydrogenations of 9c-18:1 and 12c-18:1 oleic acid were 0.1262 and 0.0148, and the catalytic selectivity of linoleic acid was 2.04.For the catalyst loading of 0.23%, the hydrogenation temperature was 80°C, the ammonium formate concentration was 0.32 mol/50 mL, and the low-erucic-acid rapeseed oil was hydrogenated in 90 min; it was also found that the iodine value of low-erucic-acid rapeseed oil was 80 g I₂/100 g, the oleic acid content was 65%, and the trans fatty acids (TFAs) content was only 6.7%. Therefore, catalytic transfer hydrogenation (CTH) may be widely used in the modification of oils and fats.

Keywords: TFAs; catalytic transfer hydrogenation; kinetics; low-erucic-acid rapeseed oil; oleic acid.