Journal ArticleDOI
Novel, recyclable supramolecular metal complexes for the synthesis of cyclic carbonates from epoxides and CO2 under solvent-free conditions
TLDR
In this paper, a series of novel Zn, Cu, Fe supramolecular complexes were designed and synthesized, and the structures of these compounds have been confirmed by IR, NMR, EA and X-ray crystallography.Abstract:
A series of novel Zn, Cu, Fe supramolecular complexes were designed and synthesized. The structures of these compounds have been confirmed by IR, NMR, EA and X-ray crystallography. The complexes in combination with tetrabutylammonium bromide were studied as a binary catalyst system for CO2-fixation in the context of organic carbonate formation under solventless condition. The effects of various co-catalysts, co-catalyst concentration, reaction temperature, CO2 pressure, reaction time, various substituents on ligand and centre metal of complexes have been investigated systematically. The binary catalyst system also showed broad substrate scope of epoxide. The catalysts can be easily recovered and reused without significant loss of activity and selectivity. Comparison of different two-component dinuclear metal complexes catalysts reported by other scientists showed that the dinuclear metal complexes reported herein were competitive with most catalysts currently available. On the basis of the experimental results, the mechanism for the reaction was proposed.read more
Citations
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Journal ArticleDOI
Metal- and Halide-Free Catalyst for the Synthesis of Cyclic Carbonates from Epoxides and Carbon Dioxide
TL;DR: N,N′-Phenylenebis (5-tert-butylsalicylideneimine) is an effective single-component catalyst for the metal and halide-free synthesis of cyclic carbonates from epoxides and carbon dioxide as mentioned in this paper.
Journal ArticleDOI
1 Zn-doped ZIF-67 as catalyst for the CO2 fixation into cyclic carbonates
Adriano Zanon,Somboon Chaemchuen,Bibimaryam Mousavi,Francis Verpoort,Francis Verpoort,Francis Verpoort +5 more
Abstract: A newly Zn-doped ZIF-67 has been synthesized in water at room temperature for the first time without the aid of any organic solvent. The textural and physical properties of the material were analyzed by X-ray diffraction (XRD), thermogravimetric analysis (TGA), N 2 adsorption-desorption, scanning electron microscopy (SEM) and ICP-AES. The catalyst showed quantitative conversions and selectivity for the synthesis of cyclic carbonates starting from epoxides and carbon dioxide. Compared with different reported MOFs as heterogeneous catalysts used for the cycloaddition of carbon dioxide to epoxides, this catalyst outperforms all the reported ones till now. The coupling reaction was studied at different pressures and temperatures applying different epoxide substrates. Additionally, no co-catalyst and solvent were required to obtain excellent conversions. The heterogeneous nature of the catalyst was maintained at least up to four catalytic cycles with a slight loss of activity.
Journal ArticleDOI
Homogeneous Iron Catalysts in the Reaction of Epoxides with Carbon Dioxide
Journal ArticleDOI
Solvent-free synthesis of cyclic carbonates from CO2 and epoxides catalyzed by reusable alumina-supported zinc dichloride
Grigoriy N. Bondarenko,Ekaterina G. Dvurechenskaya,Olga G. Ganina,Francisco Alonso,Irina P. Beletskaya +4 more
TL;DR: The ZnCl2/Al2O3-TBAI system has evinced to be a cheap, simple, readily accessible and reusable catalyst for the reaction of carbon dioxide with aromatic, aliphatic, cyclic and fluorinated epoxides with a low metal loading under solvent-free and mild conditions as discussed by the authors.
Journal ArticleDOI
Highly efficient fixation of carbon dioxide to cyclic carbonates with new multi-hydroxyl bis-(quaternary ammonium) ionic liquids as metal-free catalysts under mild conditions
TL;DR: A series of multi-hydroxyl bis-(quaternary ammonium) ionic liquids were prepared by a simple method, and used as bifunctional catalysts for the fixation of CO2 through the cycloaddition with epoxides in the absence of co-catalyst and solvent.
References
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TL;DR: Li-ion battery technology has become very important in recent years as these batteries show great promise as power sources that can lead us to the electric vehicle (EV) revolution as mentioned in this paper.
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TL;DR: In this paper, a review of recent developments and future perspectives in carbon dioxide usage for sustainable production of energy and chemicals and to reduce global warming is presented, focusing on the design of metal electrodes to improve their performance and recent developments of alternative approaches such as the application of ionic liquids as electrolytes and microorganisms as co-catalysts.
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Recent advances in the catalytic preparation of cyclic organic carbonates
TL;DR: The catalytic formation of cyclic organic carbonates (COCs) using carbon dioxide (CO2) as a renewable carbon feed stock is a highly vibrant area of research with an increasing amount of researchers focusing on this thematic investigation as discussed by the authors.