Petroleum Processing and Petrochemicals ›› 2013, Vol. 44 ›› Issue (4): 64-69.

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STUDY OF PROBE REACTION OF N-PENTANE CONVERSION CATALYZED BY Zn-MODIFIED KL ZEOLITE

  

  • Received:2012-08-09 Revised:2012-10-24 Online:2013-04-12 Published:2013-06-05

Abstract: A series of Zn/KL zeolite catalysts were obtained by impregnation. The synthesized samples were characterized by X-ray powder diffraction (XRD) and infrared spectroscope (FT-IR). The catalytic properties of Zn/KL with Zn content (mass fraction) of 0.5%, 1.0% and 3.0%, respectively, were tested on a fixed-bed microreactor using the n-pentane isomerization and aromatization as a probe reaction. The results show that at the reaction temperature of 460℃, the catalyst with Zn of 0.5% has the best catalytic performance. The isomerization rate reaches 86.72% and aromatization rate 12.19%. And compared with Pt/KL and Pt/Al2O3, the Zn/KL catalyst with Zn of 0.5% has the highest isomerization rate. However, its aromatization rate is lower than that of both Pt/L and Pt/Al2O3 catalysts.