Three novel 3D calcium-based metal–organic frameworks (FJU-67, FJU-68, and FJU-69) established on naphthalene diimide chromophores have been synthesized, which exhibit unique multiple interpenetrated networks with dia net topologies.
An antiferromagnetic pyrazolate (Pz) MROF-12 with cyclic-type [Cu12(μ2-OH)12(Pz)12] clusters and new topology of the Schläfli symbol {460.66} was reported for the separation of C2H2/CH4 or CO2/CH4 mixture.
The separation of light hydrocarbon mixtures, especially for acetylene-containing mixtures, is in urgent demand to prepare chemical feedstocks and fuels. Here, we have prepared a new 8connected metal−organic framework (termed as FJU-99), by employ the well-defined pore space partition (PSP) strategy. Unlike the pacs (partitioned acs net) framework using C 3 -symmetric partition agent, this framework uses a V-shaped bidentate partition agent (ADPT = 2amino-4,6-dipyriadl-1,3,5-triazines). After inserting the V-shaped bidentate ligand, the large hexagonal channel has been divided into numerous finite segments. Notably, the activated FJU-99a features permanent porosity with a Brunauer−Emmett−Teller (BET) surface area of 802.5 m 2 g −1 , remarkably higher than the mother framework MIL-88. Ideal adsorbed solution theory (IAST) reveals that FJU-99a shows excellent selectivity toward C 2 H 2 /CH 4 and C 2 H 2 /CO 2 at 296 K. Laboratorial breakthrough experiments also attested that the PSP framework is promising for the separation of C 2 H 2 /CH 4 and C 2 H 2 /CO 2 .
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