Metal-organic frameworks applications

Keywords Application Metal-organic framework coordination polymer Property Synthesis... 

In order to locate metal organic frameworks (MOFs) on the map of the technologies used for C02 capture applications, we will briefly describe the major technologies that have been employed and discuss their advantages and limitations. Figure 1 shows the different technologies used for C02 capture, whereas MOFs are used under the category of membranes and adsorbents. 

Farrusseng, D. (2011) Metal-Organic Frameworks Applications from Catalysis to Gas Storage, Wiley-VCH Verlag GmbH Co KGaA. 

MacGillivray, L.R. (2010) Metal-Organic Frameworks Design and Application, John Wiley Sons, Inc. 

U. Mueller, M. Schubert, F. Teich, H. Puetter, K. Schierle-Amdt, and J. Pastre, Metal-organic frameworks - prospective industrial applications, / Mater. Chem., 16,626-636 (2006). 

Thomas KM. Adsorption and desorption of hydrogen on metal-organic framework materials for storage applications comparison with other nanoporous materials, Dalton Trans 2009, 2009,1487-1505. 

H. Van Bekkum, A. Corma, and E. Schuth), Stud. Surf Sd. Cat., vol. 168, Elsevier, Amsterdam, pp. 327-374 Muller, U., Schubert, M.M., and Yaghi, O.M. (2008) Chemistry and applications of porous metal-organic frameworks, in Handbook of Heterogeneous Catalysis, Wiley-VCH Verlag GmbH, Weinheim, pp. 247-252. 

Even though crystalline microporous materials include those with pore size between 10 and 20 A (called extra-large pore materials), few of them have a pore size within this range. This limits the applications of microporous materials to small molecules. There has always been a desire to increase the pore size of a crystalline material to more than 10 A while maintaining adequate thermal or hydrothermal stability required for various applications. Recent advances in chalcogenide and metal-organic framework materials have shown much promise for the preparation of extra-large pore materials. 

Metal organic frameworks are the crystalline materials with the lowest density. As an example, MOF-5 possesses a crystal density of only 0.61 gcm [93]. The volumetric hydrogen storage capacity of MOFs, which is referred to the volume of the material, is therefore affected by these low densities. In spite of this, Muller et al. from BASF recently showed the real potential of MOFs for industrial gas storage applications [81]. They showed that a container filled with MOF-5, IRMOF-8 or a porous Cu-based MOF exceeds, at 77 K, the volumetric hydrogen storage capacity (referred to the whole system) of a pressurized empty container filled with hydrogen. 

Metal-organic frameworks with large surface areas, controlled pore sizes, and easy functionalization of the organic part have a high potential in a variety of practical applications molecular sorption, catalysis, gas separation, molecular... 

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