Synthesis of kemiri sunan (reutealis trisperma (blanco) airy shaw) H-FAME through partially hydrogenation using Ni/C catalyst to increase oxidation stability

Hydrogenated FAME (H-FAME) synthesis of Kemiri Sunan (Reutealis Trisperma (Blanco) Airy Shaw) using Nickel/Carbon catalyst is one of the methods to improve the oxidation stability of Kemiri Sunan biodiesel. The partial hydrogenation reaction breaks the unsaturated bond on FAME (Fatty Acid Methyl Ester), which is a key component of the determination of oxidative properties. Changes in FAME composition by partial hydrogenation reaction are predicted to change the oxidation stability, so it does not cause deposits that can damage the diesel engine injection system, pump system, and storage tank. Partial hydrogenation reaction is under conditions of 120 °C and 6 bars with 100:1, 100:5, 100:10 % wt catalyst in the stirred semi-batch autoclave reactor. H-FAME synthesis with 100:5 % wt Ni/C catalyst can decrease the iodine number which is the empirical measure of the number of unsaturated bonds from 166.77 to 155.64 (g-I₂/100 g) with an increase of oxidation stability from 650 to 665 minutes.