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Citation: CHAI Zhi-bo, LÜ En-jing, ZHANG Huai-ke, REN Jie. Effect of ethanol on the isomerization of n-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(2): 207-211. shu

Effect of ethanol on the isomerization of n-heptane over Pt/SAPO-11 and Pt/ZSM-22 catalysts

  • 1.

    1. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

  • Corresponding author: REN Jie, 
  • Received Date: 19 August 2013
    Available Online: 9 October 2013

  • The hydroisomerization of n-heptane over the Pt/SAPO-11 and Pt/ZSM-22 catalysts prepared by the impregnation methods was systematically investigated in the presence of ethanol. The physicochemical properties, adsorption and reaction behaviors, and active acid sites were studied by X-ray diffraction, N2-adsorption, C2H5OH-TPD and C2H5OH-FTIR techniques. A negative impact of alcohol was observed; the activity and selectivity to isomers decreased with the increase of the ethanol amount. Nevertheless, the effect of ethanol on the hydroisomerization over the Pt/SAPO-11 was weaker than that over the Pt/ZSM-22, showing that Pt/SAPO-11 is more resistant to oxygenated compounds due to the presence of a large amount of P-OH groups in SAPO-11. The effect of ethanol on the isomerization of n-heptane occurs through its dehydration into water over the catalysts.
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