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Citation: WANG Ying-Jun, LIU Cheng-Shuang, LUO Hong-Jun, LI Xiao-Hui. Catalysis of NiO/WO₃ /TiO₂-Al₂O₃ on n-Heptane Hydroisomerization[J]. Chinese Journal of Applied Chemistry, ;2010, 27(10): 1182-1187. doi: 10.3724/SP.J.1095.2010.90877 shu

Catalysis of NiO/WO₃ /TiO₂-Al₂O₃ on n-Heptane Hydroisomerization

College of Chemistry and Chemical Engineering, Daqing Petroleum Institute, Daqing 163318

Received Date: 25 December 2009
Revised Date: 3 April 2010

TiO₂-Al₂O₃ catalyst support was prepared by the sol-gel method and NiO/WO₃/TiO₂-Al₂O₃ catalyst was prepared by stepwise impregnation.Hydroisomerization of n-heptane over the NiO/WO₃/TiO₂-Al₂O₃ catalyst was investigated in a continuous flow fixed-bed reactor under atmospheric pressure.The catalysts were characterized using XRD and BET surface area.The effects of WO₃ content,Ni content, calcination temperature,reduction temperature,reaction temperature on the catalytic performance were studied systematically.The result showed that when the mass fraction of WO₃ and Ni in the catalyst was 25% and 10%,respectively,the highest catalytic activity of NiO/WO₃/TiO₂-Al₂O₃ could be achieved. The conversion of n-heptane is 15.50% while the isomerization selectivity of i-heptane can reach 84.06%.
- NiO/WO₃/TiO₂-Al₂O₃,
- catalyst,
- n-heptane,
- hydroisomerization
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Catalysis of NiO/WO₃ /TiO₂-Al₂O₃ on n-Heptane Hydroisomerization