Fine-Tuning MOFs with Amino Group for One-Step Ethylene Purification from the C2 Hydrocarbon Mixture

Zhang, Minxing; Zhao, Haitian; Wang, Yu; Jiang, Jianwen; Meng, Chao; He, Xingwei; Liu, Penghui; Dang, Rui; Cui, Hui−Hui; Wang, Miao; Sun, Tongming; Qin, Guoping; Tang, Yanfeng; Wang, Su

doi:10.1021/acs.inorgchem.3c01056

Cited by 4 publications

(3 citation statements)

References 41 publications

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“…For the 1:99 C 2 H 2 /C 2 H 4 mixture, the selectivity at 1 atm and 298 K was 19.8, which was higher than that of NOTT-300 (2.17), Dy-MOF (1.1), dia-[Sc(Hpzc)(pzc)] (3.1), ZJNU-119 (3.5), FeMOF-74 (2.08), ZJNU-14 (1.59), NUC-19 (4.0), and Cu(TIA) (2.09) (Table S1). For the 10:90 C 2 H 6 /C 2 H 4 mixture, the selectivity at 1 bar and 298 K was 1.6, which was close to that of Zn-atz-ipa (1.67) and higher than that of TJT-100(1.2), Azole-Th-1 (1.46), and JNU-2(1.5) …”

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confidence: 64%

Flow Channel with Recognition Corners in a Stable La-MOF for One-Step Ethylene Production

Zhang,

Jiang,

Zhao

et al. 2024

Inorg. Chem.

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Single-step ethylene (C 2 H 4 ) production from acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), and ethane (C 2 H 6 ) mixtures was realized via the strategy of a flow channel with recognition corners in MOF NTUniv-64. Both the uptake amounts and the enthalpy of adsorption (Q st ) showed the same order of C 2 H 2 > C 2 H 6 > C 2 H 4 . Breakthrough testing also verified the above data and the C 2 H 4 purification ability. Grand Canonical Monte Carlo (GCMC) simulations indicated that uneven corners could precisely detain C 2 H 2 and C 2 H 6 , in which the C−H•••π interaction distance between C 2 H 2 (2.84 Å) and C 2 H 6 (3.03 Å) and the framework was shorter than that of C 2 H 4 (3.85 Å).

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confidence: 64%

Flow Channel with Recognition Corners in a Stable La-MOF for One-Step Ethylene Production

Zhang,

Jiang,

Zhao

et al. 2024

Inorg. Chem.

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“…S1). For the 1:30 C 2 H 6 /C 2 H 4 mixture, the selectivity at 298 K and 1 atm was 2.85, which exceeded that of TJT-100(1.2), 6a Zn-atz-ipa (1.67), 22 JNU-2(1.5), 23 and Azole-Th-1 (1.46). 6b Additionally, for the 1:30 CO 2 /C 2 H 4 mixture, the selectivity at 298 K and 1 atm was 3.18.…”

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confidence: 82%

Direct Ethylene Purification from a Four-Component Gas Mixture by a Microporous MOF with Aromatic Pore Surface and Carboxylates

Zhao,

Guo,

Jiang

et al. 2024

Inorg. Chem.

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The single-step purification of ethylene (C 2 H 4 ) from a mixture of carbon dioxide (CO 2 ), acetylene (C 2 H 2 ), ethylene (C 2 H 4 ), and ethane (C 2 H 6 ) was achieved through MOF Compound-1, where the aromatic pore surface and carboxylates selectively recognized C 2 H 6 and CO 2 , respectively, resulting in a reversal of the adsorption orders for both gases (C 2 H 6 > C 2 H 4 and CO 2 > C 2 H 4 ). Breakthrough testing verified that the C 2 H 4 purification ability could be enhanced 2.6 times after adding impure CO 2 . Grand Canonical Monte Carlo (GCMC) simulations demonstrate that there are interactions between CO 2 and C 2 H 6 molecules as well as between CO 2 molecules themselves. These interactions contribute to the enhancement of the C 2 H 4 purification ability upon the addition of CO 2 and the increased adsorption of CO 2 .

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“…For the PCN-306 material studied by Chen and co-workers, the experiments found that V-type carboxylic ligands can improve gas adsorption capacity by grafting polar functional groups. Significantly, the transformation of ligand bodies (benzene ring, triazole, urea group) and the introduction of functional groups (−NO 2 , −NH 2 , −CH 3 , and −F) in isostructural PMOF − can effectively regulate the pore environment engineering and achieve efficient gas storage and purification.…”

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confidence: 99%

Three Polyhedron-Based Metal–Organic Frameworks Exhibiting Excellent Acetylene Selective Adsorption

Zhou,

Song,

Krishna

et al. 2024

ACS Appl. Mater. Interfaces

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The separation of acetylene (C 2 H 2 ) from ethylene (C 2 H 4 ) and ethane (C 2 H 6 ) is crucial for the production of high-purity C 2 H 2 and the recovery of other gases. Polyhedron-based metal−organic frameworks (PMOFs) are characterized by their spacious cavities, which facilitate gas trapping, and cage windows with varying sizes that enable gas screening. In this study, we carefully selected a class of PMOFs based on V-type tetracarboxylic acid linker (JLU-Liu22 containing benzene ring, JLU-Liu46 containing urea group and recombinant reconstructed In/Cu CBDA on the basis of JLU-Liu46) to study the relationship between pore environment and C 2 adsorption and separation performance. Among the three compounds, JLU-Liu46 exhibits superior selectivity toward C 2 H 2 /C 2 H 4 (2.06) as well as C 2 H 2 /C 2 H 6 (2.43). Comparative structural analysis reveals that the exceptional adsorbed-C 2 H 2 performance of JLU-Liu46 can be attributed to the synergistic effects arising from coordinatively unsaturated Cu sites combined with an optimal pore environment (matched pore size and polarity, urea functional group), resulting in a strong affinity between the framework and C 2 H 2 molecules. Furthermore, transient breakthrough simulations of JLU-Liu46 confirmed its potential for separating C 2 H 2 in ternary C 2 gas.

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Fine-Tuning MOFs with Amino Group for One-Step Ethylene Purification from the C2 Hydrocarbon Mixture

Cited by 4 publications

References 41 publications

Flow Channel with Recognition Corners in a Stable La-MOF for One-Step Ethylene Production

Flow Channel with Recognition Corners in a Stable La-MOF for One-Step Ethylene Production

Direct Ethylene Purification from a Four-Component Gas Mixture by a Microporous MOF with Aromatic Pore Surface and Carboxylates

Three Polyhedron-Based Metal–Organic Frameworks Exhibiting Excellent Acetylene Selective Adsorption

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