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Selective Gas Adsorption in Highly Porous Chromium(II)-Based Metal-Organic Polyhedra



Gregory R. Lorzing, Benjamin Trump, Craig Brown, Eric D. Bloch


The synthesis and characterization of two novel chromium(II)-based cuboctahedral metal-organic polyhedra is reported. The alkane functionalized analog, Cr_tBu-bdc (tBu-bdc = 5-tertbutylbenzene-1,3-dicarboxylate) exhibits excellent thermal stability, retaining high porosity above 548 K. Upon activation at 448 K, the material achieves a metal-organic polyhedra record Langmuir surface area of 1796 m2/g (1135 m2/g BET). Cr_tBu-bdc also exhibits excellent O2/N2 selectivity adsorbing 5.3 mass % and 0.11, respectively, at 298 K and 100 kPa.
Chemistry of Materials


Metallic Organic Frameworks, Gas Adsorption


Lorzing, G. , Trump, B. , Brown, C. and Bloch, E. (2017), Selective Gas Adsorption in Highly Porous Chromium(II)-Based Metal-Organic Polyhedra, Chemistry of Materials, [online], (Accessed April 14, 2024)
Created September 26, 2017, Updated October 12, 2021