Hydrodesulfurization Activity of Nano-sized HZSM-5 Catalyst Modified by NiO or NiSO4

Abstract

Abstract: The hydrodesulfurization (HDS) activity of nano-sized HZSM-5 catalyst modified by different nickel species was measured with full-range FCC gasoline as feedstock. The results indicated that the nano-sized HZSM-5 catalyst modified by NiSO4 showed more stable HDS activity than the nano-sized HZSM-5 catalyst modified by NiO. The characterization of FT-IR spectra before and after pyridine adsorption, ammonium temperature-programmed desorption, and differential thermogravimetry showed that there was a strong interaction between SO2-4 and Al2O3 in the catalyst modified by NiSO4. The interaction increased both the amount and the strength of acid sites by creating a kind of acidity, being like super acid.

Key words: full-range fluid catalytic cracking gasoline, hydrodesulfurization, HZSM-5 zeolite, nickel sulfate, nickel acetate, nickel nitrate

WANG Wenshou;GUO Hongchen;LIU Hai'ou;WANG Xiangsheng*. Hydrodesulfurization Activity of Nano-sized HZSM-5 Catalyst Modified by NiO or NiSO4[J]. Chinese Journal of Catalysis, 2008, 29(8): 705-709.

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Hydrodesulfurization Activity of Nano-sized HZSM-5 Catalyst Modified by NiO or NiSO4

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