UIO-66-(OH)2(Zr) Metal Organic Frameworks (MOFs) Powder for Gas Absorption and Separation, CGASMOFUIO66OHZr
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UiO-66-(OH)2 (Zr6O4(OH)4[BDC-(OH)2]6, where BDC-(OH)2 = 2,5-dihydroxybenzene-1,4-dicarboxylate) is the dihydroxy-functionalized isoreticular analogue of UiO-66. Featuring an fcu (face-centered cubic) topology, it consists of 12-connected hexanuclear zirconium oxo-clusters (Zr6O4(OH)4) cross-linked by 2,5-dihydroxyterephthalate linkers. The dual phenolic hydroxyl groups lining the pore channels provide strong hydrogen bonding, dense electrostatic field gradients, and steric aperture contraction tailored for selective gas adsorption and molecular sieving.
For Gas Absorption & Separation, the key structural and functional features of the UIO-66-(OH)2 are: (1) Constricted Sub-Nanometer Pore Geometry: Octahedral Cages: Free internal diameter of ~ 9.5–10.5 Å (constricted from 11 Å in pristine UiO-66). Tetrahedral Cages: Free internal diameter of ~ 6.5–7.0 Å. Triangular Window Apertures: Effective aperture narrowed to ~ 4.0–4.8 Å by the protruding -OH groups, enhancing size-exclusion sieving for small gas molecules. (2) Dense Hydroxyl Hydrogen-Bonding Environment: The dual phenolic -OH groups provide both hydrogen-bond donor and acceptor sites within the microporous framework, significantly increasing polarizability and dipole-quadrupole interactions with acidic or polar guests. (3) Robust Hydrothermal & Chemical Stability: Maintains the characteristic zirconium-carboxylate bond strength (Zr(IV)–O), providing stability in boiling water, high-humidity streams, and acidic media (pH= 1–8), with thermal stability up to ~ 320–350°C.
| Part Number | CGASMOFUIO66OHZr (C-GAS-MOF-UIO66OHZr) |
| CAS | 1442399-98-2 |
| Color | Pale Yellow Powder |
| Average Sizes | 300-500 nm |
| BET | ~750-1050 m2/g |
| Pore Size | 0.7-0.9 nm |
| Primary Applications |
Gas absorption, storage, and separation. Wastewater treatment, ion separation Heterogeneous catalysis |
| Package Grade | 5 g/bottle |
References:
- Z. H. Rada, et al., Functionalized UiO-66 by Single and Binary (OH)2 and NO2 Groups for Uptake of CO2 and CH4, Ind. Eng. Chem. Res. (2016) 55 (29): 7924–7932.
- T. K. Vo, et al., Formation of structural defects within UiO-66(Zr)-(OH)2 framework for enhanced CO2 adsorption using a microwave-assisted continuous-flow tubular reactor, Microporous and Mesoporous Materials, 2021, 312, 110746