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Binary supercritical CO2 solvent mixtures for the synthesis of 3D metal-organic frameworks

AuthorsLópez Periago, Ana M. ; López-Domínguez, Pedro; Pérez Barrio, Jorge; Tobias, Gerard ; Domingo Pascual, M. Concepción
Supercritical CO2
Ionic liquid
Green chemistry
Issue Date1-Nov-2016
CitationMicroporous and Mesoporous Materials 234: 155–161 (2016)
AbstractEfficient and sustainable synthesis of MOFs, as nano or microcrystalline powder, is crucial for the development of new applications for these compounds. For this purpose, the synthesis of Zn2þ, Cu2þ and Fe3þ-based MOFs was attempted in this study by using a binary medium consisting of supercritical CO2 mixed with an ionic liquid (emimBF4 or emimBr). In comparison with conventional solvothermal and ionothermal synthesis, MOFs were herein obtained under mild reaction conditions, i.e. 200 bar and 65 C, after relatively short reaction periods (<10 h). To explore the described synthesis method as a generic procedure for the preparation of three-dimensional MOFs, different linkers of the imidazole and carboxylic acid families were tested. Widely investigated MOFs, such as ZIF-8 and HKUST-1, were prepared along with the complex mesoporous MIL-100(Fe). The structure and composition of the synthesized materials were determined by X-ray powder diffraction and elemental analysis. N2 adsorption at low temperature was used to assess the textural properties.
Publisher version (URL)http://dx.doi.org/10.1016/j.micromeso.2016.07.014
Appears in Collections:(ICMAB) Artículos
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