Abstract: The effect of hydrogenation conditions over copper-nickel catalyst and the palm oil to soy bean oil ratios on the melting point and needle penetration degree of product were studied. Results showed that under the optimal process conditions of a palm oil to soy bean oil weight ratio of 1, a reaction pressure of 0.5 MPa, a reaction time of 60 min, a reaction temperature of 240℃ and a catalyst dosage of 0.04%, the melting point and the needle penetration degree of the hydrogenated composite oils were 47.3℃ and 55/0.1mm, respectively.

Key words: copper-nickel catalyst, hydrogenation conditions, composite oils