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Citation: FAN Tong-tong, ZHOU Guang-lin, FANG Xin, LI Qin, ZHOU Hong-jun. Influence of barium addition on the performance of Cr2O3/Al2O3 catalysts in isobutane dehydrogenation[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(9): 1125-1130. shu

Influence of barium addition on the performance of Cr2O3/Al2O3 catalysts in isobutane dehydrogenation

  • Institute of New Energy, China University of Petroleum (Beijing), Beijing 102249, China

  • Corresponding author: ZHOU Guang-lin, zhouguanglin2@163.com
  • Received Date: 8 March 2016
    Revised Date: 1 June 2016

Figures(5)

  • Barium modified Cr2O3/Al2O3 catalysts were prepared by incipient impregnation. The catalysts were characterized by XRD, BET, NH3-TPD and O2-TPO and tested for isobutane dehydrogenation in a fixed-bed reactor at 560℃, 10 mL catalyst, pressure of 0.1 MPa, GHSV of 400 h-1 and atmospheric pressure. The results showed that the addition of Ba leads to the aggregation of Cr2O3, but no significant influence on the structure of the catalysts is observed. The surface acidity of the catalysts is weakened by the addition of Ba, which thereby inhibits the side reactions of cracking and carbon formation while the isobutene selectivity and stability of catalysts are improved. The optimal catalytic performance can be obtained when BaO content is around 3%.
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