6533b82ffe1ef96bd1294664
RESEARCH PRODUCT
Controlling the molecular diffusion in MOFs with the acidity of monocarboxylate modulators.
Catalin PopescuIsabel Abánades LázaroFrancisco G. Cirujanosubject
Molecular diffusionMetal-Organic Frameworks Defects Coordination modulation Heterogeneous Catalysis010405 organic chemistryChemistry010402 general chemistry01 natural sciences0104 chemical sciencesCatalysisInorganic ChemistryChemical engineeringCluster (physics)Particle sizePorosityMesoporous materialLinkerPowder diffractiondescription
The catalytic performance of metal-organic frameworks (MOFs) is related to their physicochemical properties, such as particle size, defect-chemistry and porosity, which synthetic control can be potentially achieved by coordination modulation. By combining PXRD, 1HNMR, FT-IR, N2 uptake measurements we have found insights that the different types of defects (missing linker or missing clusters consequence of the spatial distribution of missing linkers, and the combination of both) could be controlled by the type of modulator employed. We show that the molar percent of defects, either as missing linkers or as part of missing cluster defects, is related to the modulator’s acidity and subsequent incorporation into the UiO-66 structure. Modulators with strong acidity and small size result in a considerable defect induction that causes an increase in the external surface area and mesopore volume, beneficial for the ring-opening of epoxides with amines, using UiO-66 defect-modulated MOFs as heterogeneous catalysis.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-01-01 | Dalton transactions (Cambridge, England : 2003) |