Carbon dioxide capture-related gas adsorption and separation in metal-organic frameworks

Lǐ, Jiànróng; Ma, Yan; McCarthy, Michael C.; Sculley, Julian P.; Yu, Jiamei; Jeong, Hae‐Kwon; Balbuena, Perla B.; Zhou, Hong‐Cai

doi:10.1016/j.ccr.2011.02.012

Cited by 1,869 publications

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“…The zero-coverage heat of adsorption of CO 2 in PCN-88 is ca. À 27 kJ mol À 1 , which is higher than that in most MOFs constructed from pure carboxylate ligands and paddlewheel dicopper clusters 5,38 . This intermediate adsorption enthalpy implies a low-energy consumption for adsorbent regeneration, a desired property for separation applications.…”

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confidence: 76%

“…À 35 kJ mol À 1 (see Supplementary Fig. S17), higher than that in most MOFs, particularly those constructed from pure carboxylate ligands and similar paddlewheel dicopper clusters 5,38 . However, at 196 K and higher temperatures, the adsorption of N 2 and CH 4 falls below the detection limit of our instrument.…”

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confidence: 86%

“…3e, PCN-88 has a significant CO 2 (160 (7.14) and 94 (4.20) cm 3 g À 1 (mmol g À 1 )) uptake, but little CH 4 (33 and 18 cm 3 g À 1 ) and N 2 uptake (2.6 and 2.1 cm 3 g À 1 ) at 273 and 296 K and 1 atm, respectively. It should be pointed out that the CO 2 uptake capacity of PCN-88 at 296 K and 1 atm ranks among the highest for MOFs constructed from pure carboxylate ligands (see Supplementary Table S10) excluding the MOF-74 series, which are constructed from ligands with -OH moieties 5,38 . These observed selective adsorptions of CO 2 over CH 4 and N 2 can be attributed to the much stronger interactions of the CO 2 molecule with the adsorbent surface compared with those of the other two gases.…”

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confidence: 99%

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Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

et al. 2013

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Despite tremendous efforts, precise control in the synthesis of porous materials with pre-designed pore properties for desired applications remains challenging. Newly emerged porous metal-organic materials, such as metal-organic polyhedra and metal-organic frameworks, are amenable to design and property tuning, enabling precise control of functionality by accurate design of structures at the molecular level. Here we propose and validate, both experimentally and computationally, a precisely designed cavity, termed a 'single-molecule trap', with the desired size and properties suitable for trapping target CO 2 molecules. Such a single-molecule trap can strengthen CO 2 -host interactions without evoking chemical bonding, thus showing potential for CO 2 capture. Molecular single-molecule traps in the form of metal-organic polyhedra are designed, synthesised and tested for selective adsorption of CO 2 over N 2 and CH 4 , demonstrating the trapping effect. Building these pre-designed singlemolecule traps into extended frameworks yields metal-organic frameworks with efficient mass transfer, whereas the CO 2 selective adsorption nature of single-molecule traps is preserved.

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Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

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“…Metal organic frameworks (MOFs), a tunable class of porous solid-state materials, are regarded to offer prospective solutions to various challenges pertaining to gas storage and gas separation. [20][21][22][23][24][25][26][27][28][29] Evidently, the modular and hybrid character of MOFs permit the fine-tuning of their affinity for CO 2 , via the introduction of appropriate pre-functionalized ligands and/or the grafting of judiciously selected amine moieties on the open metal sites, and subsequently explore their potential for the CCS. 22,[25][26][27][28] Nevertheless, only a limited number of functionalized MOFs, affording the CO 2 -chemisorption, showed promise for DAC and low-concentration CO 2 capture from confined spaces (<0.5 %).…”

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A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

et al. 2016

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CitationA fine-tuned fluorinated MOF addresses the needs for trace CO2 removal and air capture using physisorption. Just Accepted "Just Accepted" manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides "Just Accepted" as a free service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. "Just Accepted" manuscripts appear in full in PDF format accompanied by an HTML abstract. "Just Accepted" manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are accessible to all readers and citable by the Digital Object Identifier (DOI®). "Just Accepted" is an optional service offered to authors. Therefore, the "Just Accepted" Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the "Just Accepted" Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these "Just Accepted" manuscripts.A fine-tuned fluorinated MOF addresses the needs for trace CO 2 removal and air capture using physisorption. ABSTRACT:The development of functional solid-state materials for carbon capture at low carbon dioxide (CO 2 ) concentrations, namely from confined spaces (<0.5 %) and in particular from air (400 ppm), is of prime importance with respect to energy and environment sustainability. Herein, we report the deliberate construction of a hydrolytically stable fluorinated metal-organic framework (MOF), NbOFFIVE-1-Ni, with the appropriate pore system (size, shape and functionality), ideal for the effective and energyefficient traces carbon dioxide removal. Markedly, the CO 2 -selective NbOFFIVE-1-Ni exhibits the highest CO 2 gravimetric and volumetric uptake (ca. 1.3 mmol/g and 51.4 cm 3 (STP).cm -3 ) for a physical adsorbent at 400 ppm CO 2 and 298 K. Practically, the NbOFFIVE-1-Ni offers the complete CO 2 desorption at 328 K under vacuum with an associated moderate energy input of 54 kJ/mol, typical for the full CO 2 desorption in conventional physical adsorbents but considerably lower than chemical sorbents. Noticeably, the contracted square-like channels, affording the close proximity of the fluorine centers, permitted the enhancement of the CO 2 -framework interactions and subsequently the attainment of an unprecedented CO 2 -selectivity at very low CO 2 concentrations. The precise localization of the adsorbed CO 2 at the vicinity of the periodically aligned fluorine centers, promoting the selective adsorption of CO 2 , is evidenced by the single-crystal X-ray diffraction study on t...

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“…The emerging porous metal-organic frameworks (MOFs) are promising as the cost-effective and efficient materials for CO 2 capture and separation [5][6][7][8][9][10] . The regeneration energy cost to utilize these porous materials for CO 2 capture by the implementation of temperature swing adsorption, pressure swing adsorption (PSA) and vacuum swing adsorption is significantly lower than the abovementioned alkanolamine technology.…”

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Microporous metal-organic framework with potential for carbon dioxide capture at ambient conditions

et al. 2012

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Carbon dioxide capture-related gas adsorption and separation in metal-organic frameworks

Cited by 1,869 publications

References 326 publications

Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption

Microporous metal-organic framework with potential for carbon dioxide capture at ambient conditions

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Carbon dioxide capture-related gas adsorption and separation in metal-organic frameworks

Cited by 1,869 publications

References 326 publications

Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

Porous materials with pre-designed single-molecule traps for CO2 selective adsorption

A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO2 Removal and Air Capture Using Physisorption

Microporous metal-organic framework with potential for carbon dioxide capture at ambient conditions

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Product

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A Fine-Tuned Fluorinated MOF Addresses the Needs for Trace CO₂ Removal and Air Capture Using Physisorption