A highly stable amino-coordinated MOF for unprecedented block off N2 adsorption and extraordinary CO2/N2 separation

Zhang, Ling; Jiang, Ke; Jiang, Mengdie; Yue, Dan; Wan, Yating; Xing, Huabin; Yang, Yu; Cui, Yuanjing; Chen, Banglin; Qian, Guodong

doi:10.1039/c6cc07858c

Cited by 38 publications

(30 citation statements)

References 62 publications

(17 reference statements)

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“…We ascribe the drop in selectivity to the blocking of the narrower micropores (<1.0 nm) in HCP‐SC‐SO 3 ETA in addition to its lower nitrogen content compared to HCP‐SC‐SO 3 EN (Fig. ) . CO 2 /N 2 selectivity was lowest for HCP‐SC‐SO 3 TEA, where blocking of the narrower micropores and steric hindrance around the nitrogen lowered its selectivity to 6:1.…”

Section: Resultsmentioning

confidence: 90%

“…HCPs are formed by the extensive crosslinking of aromatic monomers, which upon solvent removal affords a strained polymer that is unable to fully collapse to a nonporous state . The diverse nature of the monomers available for the synthesis of HCPs (essentially any aromatic compound that possesses multiple reactive sites for Friedel–Crafts alkylation) offers potential advantages over other classes of microporous materials such as zeolites and MOFs . HCPs do not require the use of expensive catalysts in their synthesis .…”

Section: Introductionmentioning

confidence: 99%

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Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Alahmed

Briggs

Cooper

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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Two methods of incorporating functional groups rich in nitrogen into low cost microporous hypercrosslinked polymers (HCPs) have been evaluated and the effects on the carbon dioxide CO2/N2 IAST selectivity were measured. Electrostatic incorporation of an ammonium salt into a sulfonic acid‐containing HCP polymer afforded a static CO2 uptake of 2.5 mmol g−1 with a CO2/N2 IAST selectivity of 42:1 at 1 bar and 298 K. Using column breakthrough measurements with a 15:85 CO2/N2 mixture at 298 K and 1 bar, a selectivity of 17:1 was obtained. However, varying the counterion resulted in polymers with lower CO2/N2 selectivity values. Decoration of the parent polymer with CO2‐philic imidazole followed by electrostatic ammonium salt incorporation blocked some of the micropores reducing the selectivity which re‐emphasizes the role and importance of pore width for CO2/N2 selectivity. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 2513–2521

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Alahmed

Briggs

Cooper

et al. 2018

J. Polym. Sci. Part A: Polym. Chem.

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“…MOF ZJU‐198 is a highly stable material formed by the organic linker 5‐amino‐H 2 L((2 E ,2 E ′)‐3,3′‐(5‐amino‐1,3‐phenylene) diacrylic acid) that coordinates with four Zn 2+ (empirical formula: C 12 H 7 NO 4 Zn). It has been reported that this structure separates CO 2 from N 2 , C 2 H 2 from CH 4 , and moderately C 2 H 2 from C 2 H 4 . This separation capability has been attributed to the channels of about 3.6×4.1 Å and 2.1×5.0 Å that exclude the molecule of nitrogen, and have low affinity for the molecule of methane.…”

Section: Figurementioning

confidence: 95%

“…This separation capability has been attributed to the channels of about 3.6×4.1 Å and 2.1×5.0 Å that exclude the molecule of nitrogen, and have low affinity for the molecule of methane. On the other hand, differences in the isosteric heat of adsorption of C 2 H 2 and C 2 H 4 allow this particular separation . Figure S1 of the Supporting Information shows the schematic connectivity of ZJU‐198.…”

Section: Figurementioning

confidence: 99%

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Phase Transition Induced by Gas Adsorption in Metal‐Organic Frameworks

Luna-Triguero

Vicent-Luna

Calero

2018

Chemistry A European J

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We present a molecular simulation study with the aim of investigating the structural phase transition of ZJU-198 metal-organic framework. This material has been recently synthetized with the appropriate control of window size, which performs well for the separation of mixtures of gases containing nitrogen and methane. We find that the adsorption of small gases in this structure is unusual, and provide an explanation of the molecular mechanisms involved. Using molecular simulation, we analyze the structural distortions exerted by the adsorption of carbon dioxide, nitrogen, methane, acetylene, and ethene. We found that the separation of mixtures composed of these gases in ZJU-198 is due to the organic linker of the structure. The rotation of this linker causes the expansion of the cavities and enhances gas separation by allowing the adsorption of molecules that a priori are too big to be adsorbed.

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Metal–Organic Frameworks for CO₂ Separation from Flue and Biogas Mixtures

Sahoo

Mondal

Mukherjee

et al. 2022

Adv Funct Materials

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Great efforts have been made toward the separation of CO 2 from flue gas and biogas to mitigate environmental pollution and the demand for renewable fuels, respectively. Nonthermal-based separations, such as adsorption-based or membrane-separation technology employing porous materials, are considered to be more promising than traditional cryogenic and absorption-based systems. Due to several advantages of metal-organic frameworks (MOFs) over other conventional porous materials, reports on flue and biogas separation by MOFs are burgeoning (423 for adsorption and 56 for membrane-based separations until June 2021) and demand urgent summarization. This review presents a bird's eye view on such separations while organizing the developed strategies and considering several performance parameters, such as tradeoff between sorption capacity and separation selectivity in adsorption-based systems and permeability versus separation selectivity in membrane-based systems. In addition, the mechanisms involving such separations at the molecular level are presented. A critical discussion section offers more crucial insights into these materials from industrial deployment viewpoints. Finally, future recommendations are made for further developments of MOF materials as flue and biogas separators and thus toward solving both the challenging universal problems of global warming and energy scarcity simultaneously.

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A highly stable amino-coordinated MOF for unprecedented block off N₂ adsorption and extraordinary CO₂/N₂ separation

Abstract: A highly stable amino-coordinated metal-organic framework ZJU-198 has been synthesized and structurally characterized, exhibiting high CO uptake of 105.8 cm cm while blocking off N adsorption at 1.0 bar and 298 K, attributed to the unique pore window sizes.

Cited by 38 publications

References 62 publications

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Phase Transition Induced by Gas Adsorption in Metal‐Organic Frameworks

Metal–Organic Frameworks for CO₂ Separation from Flue and Biogas Mixtures

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A highly stable amino-coordinated MOF for unprecedented block off N2 adsorption and extraordinary CO2/N2 separation

Abstract: A highly stable amino-coordinated metal-organic framework ZJU-198 has been synthesized and structurally characterized, exhibiting high CO uptake of 105.8 cm cm while blocking off N adsorption at 1.0 bar and 298 K, attributed to the unique pore window sizes.

Cited by 38 publications

References 62 publications

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO2 selectivity

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO2 selectivity

Phase Transition Induced by Gas Adsorption in Metal‐Organic Frameworks

Metal–Organic Frameworks for CO2 Separation from Flue and Biogas Mixtures

Contact Info

Product

Resources

About

A highly stable amino-coordinated MOF for unprecedented block off N₂ adsorption and extraordinary CO₂/N₂ separation

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Covalent and electrostatic incorporation of amines into hypercrosslinked polymers for increased CO₂ selectivity

Metal–Organic Frameworks for CO₂ Separation from Flue and Biogas Mixtures