Screening Hoffman-type metal organic frameworks for efficient C2H2/CO2 separation

Insights into the thermodynamic–kinetic synergistic separation of propyne/propylene in anion pillared cage MOFs with entropy–enthalpy balanced adsorption sites

“…Adsorptive separation based on porous solid adsorbents has been recognized as a promising alternative technology for gas/vapor separation because of its eco-friendly nature and energy efficiency. 4–10 However, due to the great similarity in the molecular size (C 3 H 4 : 4.16 × 4.01 × 6.51 Å 3 , C 3 H 6 : 4.65 × 4.16 × 6.44 Å 3 ) and polarizability (C 3 H 4 : 55.5 × 10 −25 cm 3 , C 3 H 6 : 62.6 × 10 −25 cm 3 ), the adsorptive separation of C 3 H 4 /C 3 H 6 by molecular recognition is still very challenging. 11 Only two examples of zeolites are reported and their C 3 H 4 capacity is relatively low.…”

A new honeycomb MOF for C2H4purification and C3H6enrichment by separating methanol to olefin products

“…14 Metal-organic frameworks (MOFs) are highly designable and tuneable because of organic-inorganic hybrid components. [15][16][17][18][19] This specically leads to the unique pore shape/size and surface functionality in MOFs 20 and promotes their varied applications. [21][22][23][24][25][26][27][28] Typically, in gas adsorption and separation elds, many MOFs thus far have focused on separating C 2 or C 3 hydrocarbons from methane (C 1 ), which showed excellent performance and revealed promising application prospects.…”

Extraordinary Separation of Acetylene-Containing Mixtures in a Honeycomb Calcium-Based MOF with Multiple Active Sites

“…14−17 The typical features provide prospective design of target materials with desirable properties for specific molecular recognition. 18,19 In this respect, a large number of MOFs were reported to selectively capture C 2 H 2 from CO 2 or other C 1 /C 2 light hydrocarbons. 20−23 However, for the two important separations of C 2 H 2 from CO 2 or C 2 H 4 , only a few MOFs were found to be effective in the actual breakthrough experiments due to their low selectivity stemming from comparable molecular sizes and physical properties (Table S1).…”

“…The emerging metal–organic frameworks (MOFs) based on physical adsorption are promising sorbents for gas separation because of their potent predictability and tunability on pore shape/size and functionality. − The typical features provide prospective design of target materials with desirable properties for specific molecular recognition. , In this respect, a large number of MOFs were reported to selectively capture C 2 H 2 from CO 2 or other C 1 /C 2 light hydrocarbons. − However, for the two important separations of C 2 H 2 from CO 2 or C 2 H 4 , only a few MOFs were found to be effective in the actual breakthrough experiments due to their low selectivity stemming from comparable molecular sizes and physical properties (Table S1). − In particular, the separations of C 2 H 2 from more challenging ternary gas mixtures to model complex C 2 H 2 -rich industrial gas mixtures have rarely been reported. , To achieve this goal, it is still desirable to explore new MOFs with excellent C 2 H 2 selectivity and high adsorption capacity over other gases.…”