Ethane/ethylene separation on a copper benzene-1,3,5-tricarboxylate MOF

High purity ethane/ethylene separation by gas phase simulated moving bed using ZIF‐8 adsorbent

“…Ethylene is preferentially adsorbed with an adsorption capacity that ranges from 8 to 12 mol·kg −1 . The higher olefin affinity on this copper based MOF was also observed, in previous works performed by other authors . It is worth noting that high ethylene selectivity of above mentioned MOF materials is primarily driven by the strong olefin adsorption on open metal sites (e.g., Cu, Mn) and require high energy input in the form of temperature to desorb ethylene and regenerate the adsorbent.…”

“…To consider and correct the buoyancy effect, some assumptions must be applied. The assumptions and equations are presented in previous manuscripts . All the adsorption equilibrium isotherms were obtained using the same ZIF‐8 sample and without thermal pretreatment between measurements, as the initial mass was always recovered at the end of the desorption branch.…”

Computational screening of MOFs for C 2 H 6 /C 2 H 4 and C 2 H 6 /CH 4 separations

“…(Herm et al, 2014) For example, CuBTC, which has a high density of OMS, was experimentally studied and adsorption of C 2 H 4 on CuBTC was reported to be higher than that of C 2 H 6 . (Martins et al, 2015) A recent study showed that conventional "off-the-shelf" molecular models, based on the LJ potential, become unable to describe the specific and localized nature of the interactions between C 2 H 4 and OMS of MOFs and detailed quantum-level calculations must be used to accurately define these interactions Dreiding (Mayo et al, 1990) force field was used for all framework atoms. This force field was selected based on the results of our initial simulation studies that give a good agreement with the available experimental gas uptake data of C 2 H 6 , C 2 H 4 and CH 4 in various…”

Poly(ethylene oxide)/Ag ions and nanoparticles/1-hexyl-3-methylimidazolium tetrafluoroborate composite membranes with long-term stability for olefin/paraffin separation

“…22 In addition, membranes using ZIF and MOF have also been reported. [23][24][25][26][27][28][29][30][31][32] NPs formed therein. We reasoned that BMIM + BF 4 À would stabilize the smaller nascent Ag NPs, inhibiting their aggregation and thus maintaining membrane permeability.…”