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Ultrahigh Porosity in Metal-Organic Frameworks
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Journal Article
Ultrahigh Porosity in Metal-Organic Frameworks
2010
Overview
Crystalline solids with extended non-interpenetrating three-dimensional crystal structures were synthesized that support well-defined pores with internal diameters of up to 48 angstroms. The Zn 4 O(CO₂) 6 unit was joined with either one or two kinds of organic link, 4,4', 4\"-[benzene-l, 3,5-triyl-tris (ethyne-2, l-diyl)] tribenzoate (BTE), 4'4',4\"-[benzene-1,3,5-triyl-tris(benzene-4,1-diyl)] tribenzoate (BBC), 4,4',44\"-benzene-1,3,5-triyl-tribenzoate (BTB)/2,6-naphthalenedicarboxylate (NDC), and BTE/biphenyl-4,4'-dicarboxylate (BPDC), to give four metal-organic frameworks (MOFs), MOF-180, -200, -205, and -210, respectively. Members of this series of MOFs show exceptional porosities and gas (hydrogen, methane, and carbon dioxide) uptake capacities. For example, MOF-210 has Brunauer-Emmett-Teller and Langmuir surface areas of 6240 and 10,400 square meters per gram, respectively, and a total carbon dioxide storage capacity of 2870 milligrams per gram. The volume-specific internal surface area of MOF-210 (2060 square meters per cubic centimeter) is equivalent to the outer surface of nanoparticles (3-nanometer cubes) and near the ultimate adsorption limit for solid materials.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
/ Benzene
/ Betting
/ Condensed matter: structure, mechanical and thermal properties
/ Crystals
/ Density
/ Exact sciences and technology
/ Hydrogen
/ Meters
/ Methane
/ Organic Chemicals - chemistry
/ Physics
/ Porosity
/ Structure of solids and liquids; crystallography
