Nickel-4′-(3,5-dicarboxyphenyl)-2,2′,6′,2″-terpyridine Framework: Efficient Separation of Ethylene from Acetylene/Ethylene Mixtures with a High Productivity

Wang, Hui-Hong; Liu, Qing‐Yan; Li, Libo; Krishna, Rajamani; Wang, Yuling; Peng, Xinwen; He, Chun‐Ting; Lin, Rui‐Biao; Chen, Banglin

doi:10.1021/acs.inorgchem.8b01479

Cited by 31 publications

(11 citation statements)

References 32 publications

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“…The powder X-ray diffraction (PXRD) patterns of the bulk samples of JXNU-10 are close to the simulated ones (Figure S3), suggesting the phase purity of the materials. The thermogravimetric analysis (TGA) results showed that the desolvated frameworks of JXNU-10 can stand up to 440 °C (Figure S4), which is higher than those of the general MOFs including zeolitic imidazolate frameworks (<400 °C), indicating a high thermal stability for these cluster-based RE-MOFs. The high thermal stability of these MOFs should be a result of the robust coordination bonds between the trivalent RE ions and hard Lewis base of oxygen atoms.…”

Section: Resultsmentioning

confidence: 99%

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

et al. 2021

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Two rare-earth (RE) metal–organic frameworks (MOFs) formulated as {(Me2NH2)2[RE9(μ3-OH)8(μ2-OH)3(DCPB)6(H2O)3]} n (RE = Y3+ and Tb3+; termed JXNU-10) built from a triangular 3,5-di(4′-carboxylphenyl)benzoic acid (DCPB3–) ligand are presented. JXNU-10 features the rarely observed 18-connected nonanuclear [RE9(μ3-OH)8(μ2-OH)3] clusters, one-dimensional-nanosized tubular channels, and trigonal-bipyramidal cavities. The presence of the high-nuclear RE-oxo clusters and the robust coordination bonds between the highly charged RE ions and the hard base of the carboxylate/hydroxyl oxygen atoms yielded the water-resistant JXNU-10 materials. JXNU-10 exhibits highly selective sorption of C2H2 over CO2 and highly efficient separation of a C2H2 and CO2 mixture. The carboxylate oxygen atoms and the rich π systems of the organic ligands on the pore walls are the desirable binding sites for a C2H2 molecule with acidic hydrogen atoms and an alkyne group, facilitating the excellent efficiency of JXNU-10 for C2H2/CO2 separation demonstrated by breakthrough experiments.

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Section: Resultsmentioning

confidence: 99%

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

et al. 2021

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“…Breakthrough Separation Experiments. The breakthrough separation experiments were measured on a homemade apparatus 13 for a 50/50 (v/v) C 2 H 2 /CO 2 mixture at 298 K and 1 atm. A stainlesssteel column with a length of 120 mm and an inner diameter of 3 mm was used.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Water-Stable Europium 1,3,6,8-Tetrakis(4-carboxylphenyl)pyrene Framework for Efficient C₂H₂/CO₂ Separation

Liu

Krishna

et al. 2019

Inorg. Chem.

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Compound {(Me2NH2)3[Eu7(μ3-O)2(TBAPy)5(H2O)6]·12.5DMF} n (JXNU-5), constructed from the 1,3,6,8-tetrakis(4-carboxylphenyl)pyrene (TBAPy4–) ligand and one-dimensional (1D) europium carboxylate rods, is presented. JXNU-5 has a three-dimensional framework with 1D channels. The strong coordination bonds between EuIII ions with high charge densities and carboxylate O atoms as well as strong π···π-stacking interactions between pyrenes lead to a water-resistant JXNU-5, which was verified by powder X-ray diffraction and surface area measurements. The breakthrough simulations and experiments demonstrate that an efficient C2H2/CO2 (50/50 mixture) gas separation at ambient conditions was achieved with JXNU-5. The calculation results show that the dominating interactions between the absorbed C2H2 molecules and host framework are hydrogen bonds associated with the carboxylate O atoms exposed on the pores. Thus, an elegant example of a water-stable metal–organic framework for effective C2H2/CO2 separation is demonstrated.

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“…Gas separation experiments were performed on our previously reported apparatus for gas mixtures. 12 A gas chromatograph with a thermal conductivity detector was used for monitoring the effluent gas from the adsorption column. The separation experiments were carried out at 298 K and 1 atm.…”

Section: ■ Introductionmentioning

confidence: 99%

Fluorinated Biphenyldicarboxylate-Based Metal–Organic Framework Exhibiting Efficient Propyne/Propylene Separation

et al. 2020

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A novel fluorinated biphenyldicarboxylate ligand of 3,3′,5,5′-tetrafluorobiphenyl-4,4′-dicarboxylic acid (H2-TFBPDC) and its terbium metal–organic framework, {[Tb2(TFBPDC)3(H2O)]·4.5DMF·0.5H2O} n (denoted as JXNU-6), were synthesized. JXNU-6 exhibits a three-dimensional (3D) framework built from one-dimensional (1D) terbium carboxylate helical chains bridged by TFBPDC2– linkers. The 3D framework of JXNU-6 features 1D fluorine-lined channels. The gas adsorption experiments show that the activated JXNU-6 (JXNU-6a) displays distinct adsorption behavior for propyne (C3H4) and propylene (C3H6) gases. The effective removal of a trace amount of C3H4 from C3H6 was achieved by JXNU-6a under ambient conditions, which is demonstrated by the column-breakthrough experiments. The modeling studies show that the preferential binding sites for C3H4 are the exposed F atoms on the pore surface in 1D channels. The strong C–H···F hydrogen bonds between C3H4 molecules and F atoms of TFBPDC2– ligands dominate the host–guest interactions, which mainly account for the excellent C3H4/C3H6 separation performance of JXNU-6a. This work provides a strategy for specific recognition toward C3H4 over C3H6 through the C–H···F hydrogen bond associated with the fluorinated organic ligand.

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Nickel-4′-(3,5-dicarboxyphenyl)-2,2′,6′,2″-terpyridine Framework: Efficient Separation of Ethylene from Acetylene/Ethylene Mixtures with a High Productivity

Cited by 31 publications

References 32 publications

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

Water-Stable Europium 1,3,6,8-Tetrakis(4-carboxylphenyl)pyrene Framework for Efficient C₂H₂/CO₂ Separation

Fluorinated Biphenyldicarboxylate-Based Metal–Organic Framework Exhibiting Efficient Propyne/Propylene Separation

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Nickel-4′-(3,5-dicarboxyphenyl)-2,2′,6′,2″-terpyridine Framework: Efficient Separation of Ethylene from Acetylene/Ethylene Mixtures with a High Productivity

Cited by 31 publications

References 32 publications

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C2H2/CO2 Separation

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C2H2/CO2 Separation

Water-Stable Europium 1,3,6,8-Tetrakis(4-carboxylphenyl)pyrene Framework for Efficient C2H2/CO2 Separation

Fluorinated Biphenyldicarboxylate-Based Metal–Organic Framework Exhibiting Efficient Propyne/Propylene Separation

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Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

Metal–Organic Frameworks Featuring 18-Connected Nonanuclear Rare-Earth Oxygen Clusters and Cavities for Efficient C₂H₂/CO₂ Separation

Water-Stable Europium 1,3,6,8-Tetrakis(4-carboxylphenyl)pyrene Framework for Efficient C₂H₂/CO₂ Separation