Abstract
A simple solvent- and catalyst-free method is presented for the synthesis of the large-pore metal–organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vap...
Highlights
Metal−organic frameworks (MOFs) are microporous crystalline materials built up from metal ion nodes connected by multitopic organic linkers.[1]
chemical vapor deposition (CVD) metal-azolate framework (MAF)-6 powder is obtained by heating a mixture of ZnO and HeIm (Figure 2a)
Powder X-ray diffraction (PXRD) data confirms the formation of MAF-6, together with leftover ZnO (Figure S3.1)
Summary
Metal−organic frameworks (MOFs) are microporous crystalline materials built up from metal ion nodes connected by multitopic organic linkers.[1]. The following elements are typically desired for powder synthesis: high reaction yields, mild reaction conditions, cheap precursors such as metal oxides, no or recyclable nontoxic solvents.[6,7] Several methods combine most of these criteria: (i) mechanochemical synthesis (dry milling)[8] and its derivatives (ion-) and liquid-assisted grinding ((I)LAG),[9] (ii) solvent-free reactions,[10,11] and (iii) accelerated aging under high relative humidity and/or in the presence of a salt catalyst.[12] These methods have been successful in the synthesis of microporous ZIF-8 ([Zn(mIm)2]), known as MAF-4, from ZnO and 2methylimidazole (HmIm).[10,13,14]
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