Hydrocracking of n-decane over non-sulfided Ni-CsₓH₃₋ₓPW₁₂O₄₀/Al₂O₃ catalysts
2012
Jin, Hao | Yi, Xiaodong | Sun, Suhua | Liu, Jie | Yang, Guang | Zhu, Huihong | Fang, Weiping
The effect of Cs content in CsₓH₃₋ₓPW₁₂O₄₀ on the catalytic performance of the reduced Ni-CsₓH₃₋ₓPW₁₂O₄₀/Al₂O₃ catalysts for hydrocracking of n-decane with the presence of thiophene and pyridine is studied. The catalysts were characterized by BET, XRD, in situ XRD, Raman, H₂-TPR, H₂-TPD, NH₃-TPD and FT-IR of pyridine adsorption. The best result was obtained on 8%Ni-50%CsH₂PW₁₂O₄₀/Al₂O₃ catalyst which shows the highest catalytic activity and with tolerance to 525ppm of thiophene and 170ppm of pyridine (the reaction conditions: 2.0MPa, LHSV=2.92h⁻¹, H₂/n-decane 1500 vol/vol at 300°C). The high catalytic performance of the catalyst may be due to the proper balance between metal and acid functions by adding a certain proportion of Cs to the system.
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