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Citation: GONG Jing-jing, LI Shu-chao, ZHOU Hua-lan, XU Bo-lian, FAN Yi-ning. Promotional effect of Na+ in the supported PtSnNa/SUZ-4 catalysts for propane dehydrogenation[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(7): 857-861. shu

Promotional effect of Na+ in the supported PtSnNa/SUZ-4 catalysts for propane dehydrogenation

  • 1.

    Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

  • Corresponding author: FAN Yi-ning, 
  • Received Date: 18 March 2015
    Available Online: 29 May 2015

  • The promotional effects of Na+ component in the supported PtSnNa/SUZ-4 catalysts for propane dehydrogenation have been studied by using X-ray diffraction (XRD), H2 chemisorption, NH3 temperature-programmed desorption (NH3-TPD) and H2 temperature-programmed reduction (H2-TPR) combined with microreator tests. It has been shown that Na+ component in the supported PtSnNa/SUZ-4 catalysts can neutralize the strong acidic sites on the surface of SUZ-4 zeolite support, increasing the Pt dispersion and suppressing the cracking of olefin products and the formation of coke, leading to the increases of propene selectivity and catalytic stability. But, excessive Na+ ions in the catalyst decreases the interaction between Sn component and SUZ-4 zeolite support, resulting in the drastic decrease of catalytic activity for propane dehydrogenation.
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