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A bio-based alginate aerogel as an ionic liquid support for the efficient synthesis of cyclic carbonates from co2 and epoxides
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Orientador(es)
Resumo(s)
In this work, the ionic liquid [Aliquat][Cl] was supported into alginate and silica aerogel matrices and applied as a catalyst in the cycloaddition reaction between CO2 and a bio-based epoxide (limonene oxide). The efficiency of the alginate aerogel system is much higher than that of the silica one. The method of wet impregnation was used for the impregnation of the aerogel with [Aliquat][Cl] and a zinc complex. The procedure originated a well-defined thin solvent film on the surface of support materials. Final materials were characterised by Fourier Transform Infrared Spectroscopy, N2 Adsorption–Desorption Analysis, X-ray diffraction, atomic absorption and Field Emission Scanning Microscopy. Several catalytic tests were performed in a high-pressure apparatus at 353.2 K and 4 MPa of CO2.
Descrição
RTI2018-097456-B-I00
POCI-01-0145-FEDER-016387
ROTEIRO/0031/2013
Palavras-chave
Alginate aerogels CO Cyclic carbonates Cycloaddition Epoxides Limonene carbonate Supercritical Supported ionic liquids Catalysis Physical and Theoretical Chemistry