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Pàgina inicial > Articles > Articles publicats > Continuous one-step synthesis of porous M-XF6-based metal-organic and hydrogen-bonded frameworks |
Data: | 2017 |
Resum: | Metal-organic frameworks (MOFs) built up from connecting M-XF₆ pillars through N-donor ligands are among the most attractive adsorbents and separating agents for CO₂ and hydrocarbons today. The continuous, one-step spray-drying synthesis of several members of this isoreticular MOF family varying the anionic pillar (XF₆=[SiF₆]²⁻ and [TiF₆]²⁻), the N-donor organic ligand (pyrazine and 4,4'-bipyridine) and the metal ion (M=Co, Cu and Zn) is demonstrated here. This synthetic method allows them to be obtained in the form of spherical superstructures assembled from nanosized crystals. As confirmed by CO₂ and N₂ sorption studies, most of the M-XF₆-based MOFs synthesised through spray-drying can be considered "ready-to-use" sorbents as they do not need additional purification and time consuming solvent exchange steps to show comparable porosity and sorption properties with the bulk/single-crystal analogues. Stability tests of nanosized M-SiF₆-based MOFs confirm their low stability in most solvents, including water and DMF, highlighting the importance of protecting them once synthesised. Finally, for the first time it was shown that the spray-drying method can also be used to assemble hydrogen-bonded open networks, as evidenced by the synthesis of MPM-1-TIFSIX. |
Ajuts: | Ministerio de Economía y Competitividad MAT2012-30994 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-80 European Commission 615954 European Commission 685727 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/BP-B-00155 Ministerio de Economía y Competitividad RYC-2010-06530 Ministerio de Economía y Competitividad SEV-2013-0295 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Fluorinated materials ; Metal-organic frameworks ; Spray-drying ; Stability |
Publicat a: | Chemistry (Weinheim), Vol. 23, Issue 28 (May 2017) , p. 6829-6835, ISSN 1521-3765 |
Post-print 22 p, 989.8 KB |
Supporting Information 23 p, 2.2 MB |