A microporous chromium-organic framework fabricatedviasolvent-assisted metal metathesis for C₂H₂/CO₂separation

Abstract

Removal of CO2 or C2H4 from C2H2 is still a challenging task for their similar physical-chemical properties. Here, a bifunctional ligand decorated with amino and sulfoxide groups, 5',5′′′′-sulfonylbis (2'-amino-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid)...

A 2D flexible cobalt-MOF: reversible solid-state structural transformation, two-step and gate-opening adsorption behaviours, and selective adsorption of C2H2over CO2and CH4

“…The C 2 H 2 /CO 2 selectivity for Co-MOF-β at 298 K and 1 atm was superior to that of previously reported MOFs such as UPC-200(Fe)–F–L (2.25–2.94), 25 UPC-200(M)–F–H 2 O (2.31–2.53), 25 FJU-36a (2.8), 26 Cu-CPAH (3.6) 27 and FJU-90a 28 (4.3). The calculated C 2 H 2 /CH 4 selectivity was also higher than that of previously reported MOFs such as Fe-MOF (2.9), 29 UTSA-10 (6.2), 30 UTSA-38 (5.6) 31 and QMOF-2 32 (5.3) (Table S10†). These results imply that Co-MOF-β is a promising adsorbent material for fuel gas purification and separation of light hydrocarbons.…”

“…6). Compared to the other MOFs, the Q st value for C 2 H 2 of Co-MOF-β is higher than those of typical MOFs such as SNNU-37(Sc) (26.5 kJ mol −1 ), 19 UTSA-222a (26.0 kJ mol −1 ), 20 and ZnSDB (23.1 kJ mol −1 ), 21 and is comparable to those of HKUST-1 (30.4 kJ mol −1 ), 22 UTSA-74a (31.0 kJ mol −1 ), [23][24][25][26][27][28][29][30]3 kJ mol −1 ) 24 (Table S9 †). The value of Q st for C 2 H 2 indicates that Co-MOF-β could be regenerated under mild conditions, which would be highly beneficial for energy-efficient C 2 H 2 /CO 2 separation.…”

4 in 1: multifunctional europium–organic frameworks with luminescence sensing properties, white light emission, proton conductivity and reverse acetylene–carbon dioxide adsorption selectivity

“…58–60 A one-step purification process is more desirable but it needs adsorbents with preferential adsorption of carbon dioxide, which are very rare. 49,61…”

“…[58][59][60] A one-step purification process is more desirable but it needs adsorbents with preferential adsorption of carbon dioxide, which are very rare. 49,61 The CO 2 /C 2 H 2 selectivity factors of the Eu-MOF calculated using the IAST method 62 for an equimolar mixture at 1 bar were 1.3 and 1.1 at 273 K and 298 K, correspondingly (Table S6 †). The dependence of adsorption selectivity factors on the gas mixture composition and total pressure is shown in Fig.…”

Optimization Strategies of the Design and Preparation of Metal–Organic Framework Nanostructures for Water Sorption: A Review

“…Schulz et al 118 synthesized MIL-140 using 4,4′stilbenedicarboxylic acid as a new linker in a highly concentrated reaction mixture, which effectively reduced the synthesis temperature. Lu et al 119 prepared a high-performance microporous chromium organic skeleton for C 2 H 2 /CO 2 separation by a solvent-assisted metal recombination method, and the preparation process was convenient and simple.…”