PRODUCTION OF NON-ESTER RENEWABLE DIESEL BY THE HYDROGENATION OF VEGETABLE OIL ON THE 15Co5Ni-10Ce / Al2O3 CATALYST

Abstract

The catalysts by incipient wetness impregnation method were prepared and characterized by XRD, BET, H 2 -TPD, NH 3 -TPD and H 2 -TPR analysis, and the catalyst activity was detected by WFSM-3060 high-pressure reactor. Effective double metal catalysts were produced by using γ-Al 2 O 3 as carrier and Co and Ni as activity center, and more effectiveness by using Ce to modify. The results revealed that the 15Co5Ni-10Ce catalyst was the best in producing bio-fuels. The catalyst had good thermal stability, three kinds of adsorbed sites and three kinds of acidic sites. Compared with sintering, the catalyst deactivation was due to coke deposition. The results of FT -IR, SF-3, GC and GC-MS indicated that reaction temperature is the key factor and that oil velocity is a very important factor. The optimized condition was at reaction temperature of 450°C, reaction pressure of 3.0 MPa, oil velocity of 0.1 mL/min and the gas velocity of 35 mL/min, respectively. The alkanes and alkenes content of liquid products are 50.02% and 40.03% under the optimized condition. The main products are the hydrocarbon compounds under C 18 . The results of GC online and trace water determination showed that the main products of oxygen in the oil are CO and CO 2 , and that the minor product is H 2 O. The importance and the economical production of the Non-ester renewable diesel from vegetable oil are presented. From the results of FT-IR，SF-3 and GC-MS, the generating mechanism of Non-ester renewable diesel was deduced.