Abstract: β-Mo2C(20%)/SAPO-11 catalyst was prepared by impregnation and temperature programming reduction using n-hexane as carbon source. The test results of XRD, BET and FT-IR showed that β-Mo2C was well crystallized and the catalyst possessed preferable pore diameter and pore volume. The hydroisomerization performance of n-dodecane over β-Mo2C/SAPO-11 catalyst was studied using a fixed-bed down-flow reactor system, and the effect of reaction parameters, such as temperature, pressure, LHSV and the H2/oil volume ratio was investigated. Results showed that under the optimum conditions of a reaction temperature of 400℃, a reaction pressure of 3MPa, a LHSV of 1.0 h-1, and a H2/oil volume ratio of 400, the conversion of n-dodecane reached 80.2%, the isomers selectivity and the isomers yield were about 70% and 57%, respectively.

Key words: β-Mo2C/SAPO-11, hydroisomerization, hexane, n-dodecane