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30-4015: Zinc 2-methylimidazole MOF ZIF-8

Strong Structural Characteristics Make MOF ZIF-8 a Promising Candidate for Heterogeneous Applications

Porous Zeolitic Imidazolate Frameworks (ZIFs), which belong to the family of Metal-Organic Frameworks (MOFs), are interesting materials because of their use in gas/liquid storage and separation.  ZIFs can also be used as heterogeneous catalysts for organic reactions.

Among the varieties of ZIFs, ZIF-8 is an exceptional material because of its structural, chemical and thermal stability. Zeolite-type tetrahedral nets of ZIF-8 are built of tetrahedral atoms of zinc, which are connected by 2-methylimidazole linkers. Compared to other ZIFs, ZIF-8 has larger pores (11.6 Å or 1.16 nm) which are accessible through small apertures of 3.4 Å (0.34 nm), a surface area of 1947 m2/g and a pore volume of 0.663 cm3/g. The product also exhibits excellent thermal stability up to 550 °C.[1]

30-4015

Building monomeric unit of ZIF-8

There are many potential applications for ZIF-8. Given its high porosity, this material can be used for storage of natural gas (where methane is a major constituent) and alkane separation from CO2 in the petrochemical industry.[2-3]  In addition, there are reports of it as a catalyst (Knoevenagel reaction), or as a catalyst support for metal nanoparticles.[4]

References:

     1. Exceptional chemical and thermal stability of zeolitic imidazolate frameworks Park K S et al. PNAS 2006;103,10186-10191

     2. (a) Separation of xylene isomers Micropor. Mesopor. Mat., 2013, 173, 1; (b) Separation of C6 Paraffins Ind. Eng. Chem. Res., 2012, 51, 4692; (c) Effective separation of propylene/propane binary mixtures  J. Membrane Sci., 2012, 93, 390.

     3. (a) MOF-containing mixed-matrix membranes for CO2/CH4 and CO2/N2 binary gas mixture separations, Sep. Purif. Technol., 2011, 81, 31. (b) Porous polyethersulfone-supported Zeolitic Imidazolate Framework Membranes for hydrogen separation  J. Phys.Chem. C., 2012, 116, 13264.

     4. (a) Catalytic activity of ZIF-8 in the synthesis of styrene carbonate,  Chem. Commun., 2013, 32, 36.;  (b) Iridium nanoparticles stabilized by metal organic frameworks: synthesis, structural properties and catalytic performance  Dalton Trans., 2012, 41, 12690;  (c) Zeolitic imidazole frameworks: Catalysts in the conversion of carbon dioxide to chloropropene carbonate, ACS Catalysis, 2012, 2, 180; (d) Expanding applications of metal-organic frameworks: zeolite imidazolate framework ZIF-8 as an efficient heterogeneous catalyst for the Knoevenagel reaction, ACS Catalysis, 2011, 1, 120.

 

Also check out the link below for more Metal Organic Frameworks offered by Strem:

MOFs

Products mentioned in this blog:

30-4015: Zinc 2-methylimidazole MOF (ZIF-8), [CAS # 59061-53-9]

 

 

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