Modulation of Gas Sorption Properties through Cation Exchange within an Anionic Metal–Organic Framework

Abstract

A novel 3D anionic metal–organic framework (MOF) of (Me2NH2)4[Ni8(PTCA)4(μ3‐OH)4(H2O)4](DMF)5(H2O)13 (H4PTCA=pyrene‐1,3,6,8‐tetracarboxylic acid) has been synthesized, in which Me2NH2+ can be exchanged by Li+ ions. The results of gas sorption measurements indicate that the desolvated MOFs both before and after Li+ exchange show highly selective adsorption for CO2 over CH4 and N2 gases, and the Li+‐exchanged MOF exhibits enhanced CO2, CH4, and H2 storage properties.

Pyrene-based metal organic frameworks: from synthesis to applications

“…In addition, anionic MOFs can be constructed using pyrene-based ligands, such as PTCA. [69][70][71] It was found out that the cations arising from the decomposition of the solvent molecule used in the synthesis act as the counter ions in the pores and favor the separation of CO 2 from CH 4 and N 2 .…”

Anion Exchange and Catalytic Functionalization of the Zirconium-Based Metal–Organic Framework DUT-67

“…Metal-organic frameworks (MOFs) are discussed as materials of high potential for a broad range of applications, such as gas storage, [1][2][3][4][5][6] separation processes [7][8][9][10][11][12][13][14][15][16][17] or sensor applications, [18][19][20][21][22][23][24][25] mostly because of the high porosity and modularity of the structure. The catalytic activity of MOFs was recognised very early, and up to now MOFs have been applied as heterogeneous catalyst in a broad variety of catalytic reactions.…”

“…Metal–organic frameworks (MOFs) are discussed as materials of high potential for a broad range of applications such as gas storage, − separation processes, − or sensor applications, − mostly because of their high porosity and modularity of the structure. The catalytic activity of MOFs was recognized very early, and up to now MOFs have been applied as heterogeneous catalyst in a broad variety of catalytic reactions. − MOFs bearing open metal sites, such as HKUST-1, − MIL-100, − or MIL-101 − are ideal Lewis acid catalysts.…”

A Versatile Anionic Cd(II)-Based Metal–Organic Framework for CO2 Capture and Nitroaromatic Explosives Detection

“…H 4 PTC ligand was obtained through previously reported methods. − Reaction of H 4 PTC with Cd­(NO 3 ) 2 ­·4H 2 O generated Cd-PTC crystals. The formula was verified through elemental analysis and TGA data to be (Me 2 NH 2 ) 2 ­[Cd­(PTC)]­·2H 2 O.…”