Tailoring a robust Al-MOF for trapping C₂H₆ and C₂H₂ towards efficient C₂H₄ purification from quaternary mixtures

Abstract

Light hydrocarbon separation is considered one of the most industrially challenging and desired chemical separation processes and is highly essential in polymer and chemical industries. Among them, separating ethylene (C2H4)...

Desolvation-Degree-Induced Structural Dynamics in a Rigid Cerium–Organic Framework Exhibiting Tandem Purification of Ethylene from Acetylene and Ethane

“…Therefore, Ce-MOF-1 has the potential to separate binary C 2 H 2 /C 2 H 4 and C 2 H 2 /CO 2 mixtures. Nevertheless, Ce-MOF-2 may exhibit unusual C 2 H 6 /C 2 H 4 separation, which is contrary to most C 2 H 4 -selective adsorbents and benefits C 2 H 4 purification in one step. − …”

“…Emerging as a new class of porous materials, metal–organic frameworks (MOFs) have witnessed great success in the last two decades toward gas storage, separation, catalysis, etc. − Remarkably, reticular chemistry , of MOFs has played important roles in the binary separation of C 2 H 2 /C 2 H 4 and C 2 H 4 /C 2 H 6 by virtue of isoreticular and/or isostructural extension/contraction/expansion/functionalization approaches. − Very recently, a few groups have even reported that a single MOF material is capable of simultaneous removal of both C 2 H 2 and C 2 H 6 from a ternary mixture of C 2 H 2 /C 2 H 4 /C 2 H 6 to enable C 2 H 4 purification by a single-step process. − Additionally, Zaworotko and Chen et al employed the synergistic sorbent separation technique to pack three task-specific MOFs in a fixed-bed column to empower high-purity C 2 H 4 production from the aforementioned ternary mixture …”

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

“…24−28 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. 29,30 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.…”

“…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.…”

Highly efficient conversion of CO2intoN-formamides catalyzed by a noble-metal-free aluminum-based MOF under mild conditions

“…Aluminum-based MOFs (Al-MOFs) have been reported to show chemical and thermal stability, enabling their application potential, including crystalline sponge, water vapor capture, gas separation and storage. [31][32][33][34][35] In addition, aluminum salts with low price and low toxicity are recognized as ideal industrial catalysts. 36 Although Al-MOFs have been reported frequently, such as MIL-53 (Al), 37 CAU-10, 38 MOF-303, 33 and MOF-520, 39 only a few of them have been utilized as catalysts for CO 2 conversion reactions.…”