Application of metal-organic frameworks in VPSA technology for CO2 capture

Model-Based Analysis of a Highly Efficient CO2 Separation Process Using Flexible Metal–Organic Frameworks with Isotherm Hysteresis

“…Recently, metal–organic frameworks (MOFs), a class of compounds consisting of metal ions or clusters coordinated to organic ligands, have been actively studied as promising adsorbents because their structures can be designed to produce the desirable adsorption properties. − Among many of these materials, flexible MOFs have attracted significant attention for CO 2 capture due to their unique property of adsorption-induced structural change called “gate-opening/closing” phenomena during adsorption and desorption. − This phenomenon occurs when the CO 2 pressure exceeds a specific value called gate pressure, and CO 2 rapidly pries open the space between the layers causing adsorption. Due to this property, flexible MOFs show large working capacity, high selectivity, and stepwise or sigmoidal adsorption isotherms.…”

Research progress in metal–organic frameworks (MOFs) in CO2capture from post-combustion coal-fired flue gas: characteristics, preparation, modification and applications

“…Kuceba et al 144 studied the application of granular MIL-53(Al) in a VPSA device for CO 2 capture in post-combustion flue gas, which confirmed the possibility of MOF regeneration in a vacuum. The development of ideal MOF adsorbents plays an important role in the application of adsorbent bed decarbonization.…”

Evaluating the CO2 capture performance of a “phase-change” metal–organic framework in a pressure-vacuum swing adsorption process

“…6,10,11 There have been several prior studies examining MOFs for post-combustion CO 2 capture applications under PVSA conditions. 12–19 Until very recently, a “phase-change” MOF had not been investigated in this scenario. 20…”