ZIF-67(Co) Metal Organic Frameworks (MOFs) Powder for Gas Absorption and Separation, CGASMOFZIF67
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ZIF-67 (Zeolitic Imidazolate Framework-67, Co(MeIM)2, where MeIM = 2-methylimidazolate) is the cobalt-based, isostructural analogue of ZIF-8. It crystallizes in a sodalite (SOD) topology where divalent cobalt ions (Co2+) are tetrahedrally coordinated to four 2-methylimidazolate nitrogen atoms, forming a robust microporous framework characterized by its signature purple/violet color.
For Gas Absorption & Separation, the key structural features of the ZIF-67 are: (1) Bimodal Pore Geometry: Central Pore Cavity: ~ 11.6 Å spherical cage. Pore Apertures: 6-membered ring windows with a nominal crystallographic aperture of ~ 3.4 Å. (2) Linker Flexibility ("Gate Opening"): Like ZIF-8, the 2-methylimidazolate linkers in ZIF-67 rotate under guest pressure, expanding the effective dynamic window aperture to ~ 4.0–4.2 Å and facilitating diffusion of slightly larger hydrocarbon molecules. (3) Chemical & Thermal Stability: Thermally stable up to ~ 350–400°C in inert atmosphere. Possesses good solvent stability (water, alcohols, alkaline media), though slightly more prone to oxidation and acid attack (pH < 5) than ZIF-8.
| Part Number | CGASMOFZIF67 (C-GAS-MOFZIF67) |
| CAS | 46201-07-4 |
| Color | Purple Powder |
| Average Sizes | ~300-500 nm |
| BET | >1600 m2/g |
| Pore Size | 0.5-0.9 nm |
| Primary Applications |
Gas absorption, storage, and separation. Wastewater treatment, ion separation Heterogeneous catalysis |
| Package Grade | 5-20 g/bottle |
References:
- S. Feng, et al., Hydrothermal stable ZIF-67 nanosheets via morphology regulation strategy to construct mixed-matrix membrane for gas separation, Journal of Membrane Science, 2020, 593, 117404
- G. Zhong, et al., The application of ZIF-67 and its derivatives: adsorption, separation, electrochemistry and catalysts, J. Mater. Chem. A (2018) 6 (5): 1887–1899.