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Dual-ionic imidazolium salts to promote synthesis of cyclic carbonates at atmospheric pressure

  • Tengfei Wang
  • , Danning Zheng
  • , Beibei An
  • , Yi Liu
  • , Tiegang Ren
  • , Hans Ågren
  • , Li Wang*
  • , Jinglai Zhang
  • , Mårten S.G. Ahlquist
  • *Corresponding author for this work
  • Henan University
  • KTH Royal Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Novel dual-ionic imidazolium salts are shown to display excellent catalytic activity for cycloaddition of carbon dioxide and epoxides under room temperature and atmospheric pressure (0.1 MPa) without any solvent and co-catalyst leading to 96.1% product yield. It can be reused five times to keep the product yield over 90%. These intriguing results are attributed to a new reaction mechanism, which is supported by theoretical calculations along with the measurements of 13C NMR spectrum and Fourier transform infrared spectroscopy (FT-IR). The excellent catalytic activity can be traced to a CO2-philic group along with an electrophilic hydrogen atom. Our work shows that incorporation of CO2-philic group is an feasible pathway to develop the new efficient ionic liquids.

Original languageEnglish
Pages (from-to)1327-1339
Number of pages13
JournalGreen Energy and Environment
Volume7
Issue number6
DOIs
StatePublished - Dec 2022
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Atmospheric pressure
  • CO-Philic group
  • Dual-ionic imidazolium salts
  • New mechanism
  • Room temperature

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