3-(2-hydroxyl-ethyl)-1-propylimidazolium bromide immobilized on SBA-15 as efficient catalyst for the synthesis of cyclic carbonates via the coupling of carbon dioxide with epoxides

Wei Li Dai, Lang Chen, Shuang Feng Yin*, Sheng Lian Luo, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)

Abstract

3-(2-hydroxyl-ethyl)-1-propylimidazolium bromide (HEPIMBr) was immobilized onto SBA-15, Al-SBA-15 mesoporous molecular sieves and SiO2 by chemical grafting method. The materials were characterized and used as catalysts for solvent-free synthesis of cyclic carbonates from CO2 and epoxides under relatively mild conditions. Among them, the HEPIMBr immobilized on SBA-15 performs the best, showing carbonate selectivity and yield of ca. 100% (120 °C, 2.0 MPa, 2 h). The catalyst is thermally stable and shows good reusability. Based on the experimental results, a plausible reaction mechanism has been proposed for the catalytic reaction.

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalCatalysis Letters
Volume135
Issue number3-4
DOIs
Publication statusPublished - Apr 2010

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Carbon dioxide
  • Cyclic carbonate
  • Epoxide
  • Hydroxyl ionic liquids
  • SBA-15

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