Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (10): 1669-1675.DOI: 10.1016/S1872-2067(14)60110-8

• Articles • Previous Articles     Next Articles

TiO2-based green heterogeneous catalysts for the cycloaddition of CO2 to epoxides

Jing Liu, anqi Wang, Huanwang Jing   

  1. State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 73000, Gansu, China
  • Received:2014-03-14 Revised:2014-04-09 Online:2014-09-28 Published:2014-09-30
  • Supported by:

    This work was financially supported by the National Natural Science Foundation of China (21173106, 20973086).

Abstract:

TiO2 doped with metal ions (M-TiO2, M = Zn2+, Cu2+, CO2+, Mn2+, or Ni2+) was investigated as a heterogeneous catalyst for the coupling reaction of CO2 and epoxides, using tetrabutylammonium iodide (TBAI) as a co-catalyst under solvent-free conditions. These compounds were found to exhibit high catalytic activities. The effects of reaction temperature, reaction time, and CO2 pressure on the effectiveness of a Zn-TiO2/TBAI catalyst system were also examined. Zn-TiO2 represents a nontoxic, heterogeneous catalyst that can be reutilized up to five times without a significant loss of catalytic activity.

Key words: Carbon dioxide, Epoxide, Cyclic carbonate, Heterogeneous catalyst, Doped titanium dioxide