TY - JOUR
T1 - Continuous One-Step Synthesis of Porous M-XF6-Based Metal-Organic and Hydrogen-Bonded Frameworks
AU - Guillerm, Vincent
AU - Garzón-Tovar, Luis
AU - Yazdi, Amirali
AU - Imaz, Inhar
AU - Juanhuix, Jordi
AU - Maspoch, Daniel
PY - 2017/1/1
Y1 - 2017/1/1
N2 - © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 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.
AB - © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim 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.
KW - CO sorption 2
KW - fluorinated materials
KW - metal-organic frameworks
KW - spray-drying
KW - stability
UR - https://ddd.uab.cat/record/194890
U2 - https://doi.org/10.1002/chem.201605507
DO - https://doi.org/10.1002/chem.201605507
M3 - Article
VL - 23
SP - 6829
EP - 6835
IS - 28
ER -