Zwitterion π -conjugated network polymer based on guanidinium and β -ketoenol as a heterogeneous organo-catalyst for chemical fixation of CO2 into cyclic carbonates

Mousumi Garai, Vepa Rozyyev, Zakir Ullah, Aqil Jamal, Cafer T. Yavuz

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The chemical fixation of CO2 with epoxides to cyclic carbonate is an attractive 100% atom economic reaction. It is a safe and green alternative to the route from diols and toxic phosgene. In this manuscript, we present a new zwitterionic π-conjugated catalyst (Covalent Organic Polymer, COP-213) based on guanidinium and β-ketoenol functionality, which is synthesized from triaminoguanidinium halide and β-ketoenols via the ampoule method at 120 °C. The catalyst is characterized by FTIR-attenuated total reflection (ATR), Powder X-Ray diffraction, thermogravimetric analysis, XPS, and for surface area Brunauer-Emmett-Teller and CO2 uptake. It shows quantitative conversion and selectivity in chemical fixation of CO2 to epoxides under ambient conditions and without the need for cocatalysts, metals, solvent, or pressure. The catalyst can be recycled at least three times without the loss of reactivity.
Original languageEnglish (US)
JournalAPL Materials
Volume7
Issue number11
DOIs
StatePublished - Nov 1 2019
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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