A facile extrusion approach that can fully retain the breathing behavior of flexible metal-organic frameworks (MOF) like MIL-53 and MIL-53-NH 2 employing methyl cellulose as binder is reported. Shaped MOF extrudates were extensively characterized by nitrogen sorption, X-ray diffraction, thermogravimetric analysis and scanning electron microscopy. A detailed study on the mechanical stability of MIL-53 extrudates with different amounts of binder reveals an increase in stability at low binder fractions while the maximum in attainable stabil- [a] 4700 Figure 2. Powder X-ray diffraction patterns of produced MIL-53 extrudates with different amounts of MC 400 (left). Nitrogen adsorption isotherms at 77 K of the MIL-53 extrudates in comparison to the parent powder (right). Desorption branches are excluded for clarity.
A new synthesis route for the zeolitic imidazolate framework ZIF‐4 is reported. About 200 g of ZIF‐4 are prepared by sonothermal synthesis from ZnO at room temperature. The ZIF‐4 prepared by sonothermal synthesis is comparable to the ZIF‐4 synthesized by the pathway reported in literature with respect to the powder X‐ray diffraction pattern, particle size, and separation potential for olefin‐paraffin gas mixtures. Moreover, the separation potential of ZIF‐4 is compared to commercial adsorbents like carbon molecular sieves and zeolites.
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