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Updated: Sep 23, 2025
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
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Bi-functional heterogeneous catalysts for carbon dioxide conversion: enhanced performances at low temperature
Adrien Comès1, Xavier Collard1, Luca Fusaro1
1Unit of Nanomaterial Chemistry (CNANO), University of Namur (UNAMUR), Department of Chemistry Rue de Bruxelles 61 5000 Namur Belgium carmela.aprile@unamur.be +32 81 724514.
RSC Advances
|May 11, 2022
Summary
Novel heterogeneous catalysts with tin or zinc single sites and imidazolium groups efficiently convert carbon dioxide to styrene carbonate at low temperatures. The tin-based catalyst shows excellent reusability and stability, offering a sustainable chemical process.
Area of Science:
- Materials Science
- Catalysis
- Green Chemistry
Background:
- Development of efficient and sustainable catalysts for carbon dioxide utilization is crucial.
- Heterogeneous catalysts offer advantages in separation and reusability.
- Bi-functional catalysts combining acid and nucleophilic sites can enhance reaction pathways.
Purpose of the Study:
- To synthesize novel bi-functional heterogeneous catalysts for carbon dioxide conversion.
- To investigate the catalytic performance of tin- and zinc-based catalysts for styrene carbonate synthesis.
- To evaluate the sustainability and reusability of the developed catalytic systems.
Main Methods:
- Synthesis of bi-functional catalysts with single-site tin or zinc within silica and imidazolium moieties.
- Extensive characterization using N2 physisorption, NMR, XPS, TEM, and adsorption microcalorimetry.
- Catalytic testing for carbon dioxide conversion to styrene carbonate, including studies with various epoxides.
Main Results:
- Successfully synthesized and characterized novel bi-functional heterogeneous catalysts.
- Both Sn- and Zn-based catalysts demonstrated improved performance compared to controls and literature precedents.
- The Sn-based catalyst showed excellent conversion with diverse epoxides, enabling reactions below 150 °C, and as low as 30 °C with glycidol.
Conclusions:
- The developed bi-functional catalysts are highly effective for sustainable styrene carbonate synthesis from carbon dioxide.
- The Sn-based catalyst exhibits superior performance, stability, and reusability, highlighting its potential for industrial applications.
- The process offers a sustainable route due to short synthesis, high atom economy, and low-temperature requirements.
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