p-Xylene-Selective Metal–Organic Frameworks: A Case of Topology-Directed Selectivity
- 27 October 2011
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 133 (46), 18526-18529
- https://doi.org/10.1021/ja207287h
Abstract
Para-disubstituted alkylaromatics such as p-xylene are preferentially adsorbed from an isomer mixture on three isostructural metal–organic frameworks: MIL-125(Ti) ([Ti8O8(OH)4(BDC)6]), MIL-125(Ti)-NH2 ([Ti8O8(OH)4(BDC-NH2)6]), and CAU-1(Al)-NH2 ([Al8(OH)4(OCH3)8(BDC-NH2)6]) (BDC = 1,4-benzenedicarboxylate). Their unique structure contains octahedral cages, which can separate molecules on the basis of differences in packing and interaction with the pore walls, as well as smaller tetrahedral cages, which are capable of separating molecules by molecular sieving. These experimental data are in line with predictions by molecular simulations. Additional adsorption and microcalorimetric experiments provide insight in the complementary role of the two cage types in providing the para selectivity.This publication has 13 references indexed in Scilit:
- Reverse shape selectivity in the adsorption of hexane and xylene isomers in MOF UiO-66Microporous and Mesoporous Materials, 2011
- Separation of Styrene and Ethylbenzene on Metal−Organic Frameworks: Analogous Structures with Different Adsorption MechanismsJournal of the American Chemical Society, 2010
- Enabling Cleaner Fuels: Desulfurization by Adsorption to Microporous Coordination PolymersJournal of the American Chemical Society, 2009
- A New Photoactive Crystalline Highly Porous Titanium(IV) DicarboxylateJournal of the American Chemical Society, 2009
- Hybrid porous solids: past, present, futureChemical Society Reviews, 2007
- Selective Adsorption and Separation of Xylene Isomers and Ethylbenzene with the Microporous Vanadium(IV) Terephthalate MIL‐47Angewandte Chemie-International Edition, 2007
- Metal–organic frameworks—prospective industrial applicationsJournal of Materials Chemistry, 2005
- Separation of Xylene Isomer Vapors with Oriented MFI Membranes Made by Seeded GrowthIndustrial & Engineering Chemistry Research, 2000
- Design and synthesis of an exceptionally stable and highly porous metal-organic frameworkNature, 1999
- A Chemically Functionalizable Nanoporous Material [Cu 3 (TMA) 2 (H 2 O) 3 ]
n
Science, 1999