ISSN: 2578-4846
Authors: Liu L*, Tang TD, Guo R, Yang CM, Duan WY, Sun J and Yao YH
The mesoporous ZSM-5 zeolite containing MoCoP/Al2O3 catalyst (C12-ZSM5) with the mixture of Al2O3 and mesoporous ZSM-5 zeolite as carrier was synthesized. The catalytic performance of C12-ZSM5 catalyst was evaluated by the hydrodesulfurization (HDS) of different diesel feedstock. The carriers and catalysts were characterized by N2 adsorption-desorption, pyridine-FTIR, X-ray diffraction (XRD) and CO in-situ FTIR (CO-FTIR) techniques. Results showed that mesoporous ZSM-5 can improve the acidity of the catalyst and increase the number of MoCoS active phases. The C12-ZSM5 catalyst had low HDS and HDN activity, because the acidic sites of mesoporous ZSM-5 were easily occupied by nitrogen compounds. The HDS activity of C12-ZSM5 catalyst was fully exploited by using graded packing technology, the sulfur content of product oil was 5.9 ng/μL.The relative HDS activity of C12-ZSM5 catalyst is 1.47 times that of FHUDS-8 catalyst.
Keywords: ZSM-5 zeolite; Hydrodesulfurization (HDS); Catalysts; Ultra-low sulfur diesel (ULSD)
