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Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (2): 355.

• Articles • Previous Articles     Next Articles

Effects of Pt Contents and Activation Temperature on the Isomerization Performance over Solid Superacid Pt-S2O2-8/ZrO2-Al2O3

SONG Hua1,2*, DONG Peng-Fei3, SHI Yang1   

  1. 1.  College of Chemistry and Chemical Engineering,   
    2.  Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas,    Northeast Petroleum University,   Daqing 163318,   China; 
    3.  Luoyang Petrochemical Engineering Corporation,  SINOPEC,  Luoyang 471003, China
  • Received:2010-05-11 Revised:2010-06-30 Online:2010-02-10 Published:2011-02-23
  • Contact: SONG Hua E-mail:songhua@dqpi.edu.cn
  • Supported by:

    中国石油天然气股份有限公司科技风险创新研究项目(批准号:  07-06D-01-04-03-02)资助.

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Abstract: The Pt-S2O82-/ZrO2-Al2O3 solid superacid catalysts were prepared and the obtained catalysts were characterized by XRD, TPR, TG-DTA and FT-IR. The catalysts were evaluated on a lab-scale high pressure microreactor with online chromatogram unit for n-pentane isomerization as a probe reaction. The effects of the Pt content and the activation temperature on the catalyst performance were studied. The results showed that Pt can reduce the catalyst reduction temperature. The Pt-S2O82-/ZrO2-Al2O3 catalyst with 0.1% Pt and activation temperature of 300℃ exhibited the highest activity for n-pentane isomerization. At reaction temperature of 220oC, pressure of 2.0 MPa, hydrogen/ hydrocarbon molar ratio of 4:1, and MHSV of 1.0 h?1, the isopentane yield were 62.3%. The isopentane yield was stabilized in about 55% and the selectivity was higher than 98.0％ within 100h.

Key words: solid superacid, S2O82-；isomerization；Pt；ZrO2-Al2O3

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