CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 276-282.doi: 10.11949/j.issn.0438-1157.20160424

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Oligomerization of isobutene catalyzed by ionic liquid consisting of anhydrous iron trichloride

YANG Shuqing, ZHENG Xianmin, WANG Luhui, ZHANG Renkun, WANG Dongguang   

  1. School of Petrochemical Technology and Energy Engineering, Zhejiang Ocean University, Zhoushan 316000, Zhejiang, China
  • Received:2016-03-31 Revised:2016-04-05 Online:2016-08-31 Published:2016-08-31
  • Supported by:

    supported by the Basic Research Foundation of Zhejiang Ocean University (21025010508).

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Abstract:

The oligomerization of butene is one of important process in chemical and oil refining industries. Its products are important chemical raw materials. Liquid isobutene oligomerization is investigated in a batch autoclave. The ionic liquid (C2H5)3NHCl-FeCl3 (mole fraction of FeCl3 is more than or equal to 0.55) shows good catalytic performance for the oligomerization of isobutene. Under good operating conditions, conversion of isobutene is above 85%, and the total mass content of dimers and trimers in oligomers is above 80%. Addition of CuCl in the ionic liquid can increase both isobutene conversion and the selectivity of dimers and trimers. When the mole ratio of CuCl to[(C2H5)3NH] Cl-0.6FeCl3 is 0.25, the mass content of dimers and trimers in oligomers reach up to 90.20% and conversion of isobutene is 98%.

Key words: oligomerization, ionic liquid, iron(Ⅲ) chloride, isobutene, copper (Ⅰ) chloride

CLC Number: 

  • 643.32
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