A New Quaternized Chitosan-Based Catalyst Obtained by an Environmentally-Friendly Synthesis Route for Green Production of Carbonated Molecules from Terminal Epoxides
ABSTRACT: Using CO2 as a building block to produce monomers through carbonation (cycloaddition reaction) provides an attractive approach to carbon dioxide valorization. The design of an efficient, cheap, and reusable catalyst for epoxide carbonation remains a challenge. In this paper, a new quaterni...
- Autores:
-
Inciarte de Solano, Helen Claret
Cortés Ávila, Natalia
Echeverri Zapata, David Alexander
Ríos, Luis Alberto
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2025
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/44893
- Acceso en línea:
- https://hdl.handle.net/10495/44893
- Palabra clave:
- Aniones
Anions
Éteres
Ethers
Compuestos Inorgánicos de Carbono
Carbon Compounds, Inorganic
Ligandos
Ligands
Catalizadores
Catalysts
https://id.nlm.nih.gov/mesh/D000838
https://id.nlm.nih.gov/mesh/D004987
https://id.nlm.nih.gov/mesh/D017554
https://id.nlm.nih.gov/mesh/D008024
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by/2.5/co/
| Summary: | ABSTRACT: Using CO2 as a building block to produce monomers through carbonation (cycloaddition reaction) provides an attractive approach to carbon dioxide valorization. The design of an efficient, cheap, and reusable catalyst for epoxide carbonation remains a challenge. In this paper, a new quaternized chitosan catalyst, useful for the cycloaddition of CO2 to epoxides, was developed. The new catalyst was obtained using a short and straightforward route, including the use of non-depolymerized chitosan and benign reactants such as succinic anhydride (a food additive), at room temperature. The catalyst allowed the carbonation of glycidyl methacrylate at 100 °C, 2 MPa, and 6 h reaction without any solvent required, with 98% epoxide conversion and 87% selectivity to the carbonated product. The catalyst was reused during 3 cycles showing stable values of conversion and selectivity to the carbonated GMA. The selectivity to the carbonated GMA remained stable at 87% during seven recycles. The use of non-depolymerized chitosan as a precursor is a key point that brought durability to the catalyst in comparison to depolymerized chitosan. The catalyst was also used in the carbonation of two di-epoxides (1,4-butanediol diglycidyl ether and bisphenol A diglycidyl ether) at 100 °C and 2 MPa affording high yields to the carbonated products. |
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