Zinc(ii ) and cadmium(ii ) amorphous metal–organic frameworks (aMOFs): study of activation process and high-pressure adsorption of greenhouse gases
| Autor: | Nikolas Király, Mária Vilková, Sandrine Bourrelly, Miroslav Almáši, Vladimír Zeleňák |
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| Přispěvatelé: | P.J. Safarik University, Matériaux divisés, interfaces, réactivité, électrochimie (MADIREL), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
General Chemical Engineering
chemistry.chemical_element 02 engineering and technology Zinc gas adsorption 010402 general chemistry 01 natural sciences Methane chemistry.chemical_compound Adsorption Chemical composition Cadmium methane carbon dioxide [CHIM.MATE]Chemical Sciences/Material chemistry General Chemistry 021001 nanoscience & nanotechnology greenhouse gasses 0104 chemical sciences Amorphous solid chemistry amorphous metal-organic frameworks Carbon dioxide 0210 nano-technology Bar (unit) Nuclear chemistry |
| Zdroj: | RSC Advances RSC Advances, 2021, 11 (33), pp.20137-20150. ⟨10.1039/D1RA02938J⟩ |
| ISSN: | 2046-2069 |
| Popis: | Two novel amorphous metal–organic frameworks (aMOFs) with chemical composition {[Zn2(MTA)]·4H2O·3DMF}n (UPJS-13) and {[Cd2(MTA)]·5H2O·4DMF}n (UPJS-14) built from Zn(II) and Cd(II) ions and extended tetrahedral tetraazo-tetracarboxylic acid (H4MTA) as a linker were prepared and characterised. Nitrogen adsorption measurements were performed on as-synthesized (AS), ethanol exchanged (EX) and freeze-dried (FD) materials at different activation temperatures of 60, 80, 100, 120, 150 and 200 °C to obtain the best textural properties. The largest surface areas of 830 m2 g−1 for UPJS-13 (FD) and 1057 m2 g−1 for UPJS-14 (FD) were calculated from the nitrogen adsorption isotherms for freeze-dried materials activated at mild activation temperature (80 °C). Subsequently, the prepared compounds were tested as adsorbents of greenhouse gases, carbon dioxide and methane, measured at high pressures. The maximal adsorption capacities were 30.01 wt% CO2 and 4.84 wt% CH4 for UPJS-13 (FD) and 24.56 wt% CO2 and 6.38 wt% CH4 for UPJS-14 (FD) at 20 bar and 30 °C. |
| Databáze: | OpenAIRE |
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