Selective Adsorption of Sulfur Dioxide in a Robust Metal–Organic Framework Material

Savage, Mathew; Cheng, Yongqiang; Easun, Timothy L.; Eyley, Jennifer E.; Argent, Stephen P.; Warren, Mark R.; Lewis, William; Murray, Claire; Tang, Chiu C.; Frogley, Mark D.; Cinque, Gianfelice; Sun, Junliang; Rudić, Svemir; Murden, Richard T.; Benham, Michael J.; Fitch, Andrew N.; Blake, Alexander J.; Ramirez‐Cuesta, Anibal J.; Yang, Sihai; Schröder, Martin

doi:10.1002/adma.201602338

Cited by 221 publications

(222 citation statements)

References 39 publications

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“…Therefore, the development of new materials for energy‐efficient separation of C 3 H 4 from C 3 H 6 is of great significance. Actually, the design of functional materials with both high selectivity and uptake at ultralow concentration for the removal of trace impurity gas is a common challenge for various gas separation and purification processes, including CO 2 capture, SO 2 removal, NH 3 separation, and so on. The removal of trace C 3 H 4 from C 3 H 6 is particularly difficult due to their similar molecular structures.…”

Section: Methodsmentioning

confidence: 99%

A Single‐Molecule Propyne Trap: Highly Efficient Removal of Propyne from Propylene with Anion‐Pillared Ultramicroporous Materials

et al. 2018

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Propyne/propylene (C H /C H ) separation is a critical process for the production of polymer-grade C H . However, optimization of the structure of porous materials for the highly efficient removal of C H from C H remains challenging due to their similar structures and ultralow C H concentration. Here, it is first reported that hybrid ultramicroporous materials with pillared inorganic anions (SiF = SIFSIX, NbOF = NbOFFIVE) can serve as highly selective C H traps for the removal of trace C H from C H . Especially, it is revealed that the pyrazine-based ultramicroporous material with square grid structure for which the pore shape and functional site disposition can be varied in 0.1-0.5 Å scale to match both the shape and interacting sites of guest molecule is an interesting single-molecule trap for C H molecule. The pyrazine-based single-molecule trap enables extremely high C H uptake under ultralow concentration (2.65 mmol g at 3000 ppm, one C H per unit cell) and record selectivity over C H at 298 K (>250). The single-molecule binding mode for C H within ultramicroporous material is validated by X-ray diffraction experiments and modeling studies. The breakthrough experiments confirm that anion-pillared ultramicroporous materials set new benchmarks for the removal of ultralow concentration C H (1000 ppm on SIFSIX-3-Ni, and 10 000 ppm on SIFSIX-2-Cu-i) from C H .

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Section: Methodsmentioning

confidence: 99%

A Single‐Molecule Propyne Trap: Highly Efficient Removal of Propyne from Propylene with Anion‐Pillared Ultramicroporous Materials

et al. 2018

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“…[39] The crystals were dropcast over the surface of the device in acetone and activated in gentle heating. [40] Ad ropcast method was needed because at hin film could not be prepared on the device. In general, larger responses were obtained when the sensing film was deposited by direct growth rather than dropcast, likely because of the better physical contact between the MOF and the gate dielectric.…”

Section: Methodsand Instrumentsmentioning

confidence: 99%

Transistor‐Based Work‐Function Measurement of Metal–Organic Frameworks for Ultra‐Low‐Power, Rationally Designed Chemical Sensors

Gardner

Gao

Fahad

et al. 2019

Chemistry A European J

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Ac lassic challenge in chemical sensingi ss electivity.M etal-organic frameworks (MOFs) are an exciting class of materials because they can be tuned for selective chemical adsorption. Adsorptione ventst riggerw ork-function shifts, which can be detectedw ith ac hemical-sensitive field-effect transistor (power % microwatts). In this work, several case studiesw ere used towards generalizing the sensing mechanism, ultimately towards our metal-centric hypothesis. HKUST-1 was used as ap roof-of-principle humidity sensor.The response is thickness independent, meaning the response is surfacel ocalized. ZIF-8 is demonstrated to be an NO 2 -sensing material,a nd the response is dominated by adsorptiona tm etal sites. Finally, MFM-300(In) shows how standard hard-soft acid-base theory can be used to qualitatively predict sensorr esponses. This paper sets the groundwork for using the tunability of metal-organic frameworks for chemicalsensing with distributed, scalable devices.[a] D.Supporting information and the ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

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“…Recently, there is an increasing demand on capturing environmentally hazardous components from various mixtures of gases or vapors. Examples include CO 2 capture and sequestration, capture of toxic gaseous pollutants such as NH 3 , H 2 S, SO x , NO x , CO, and fluorocarbons, and even capture of chemical warfare agents . In addition, some gas‐phase separations, such as H 2 /D 2 separation, Xe/Kr separation, and capture of iodine vapor, are relevant to nuclear fuel purification and nuclear waste treatment.…”

Section: Gas Phase Separationmentioning

confidence: 99%

Metal–Organic Frameworks for Separation

et al. 2018

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Separation is an important industrial step with critical roles in the chemical, petrochemical, pharmaceutical, and nuclear industries, as well as in many other fields. Although much progress has been made, the development of better separation technologies, especially through the discovery of high-performance separation materials, continues to attract increasing interest due to concerns over factors such as efficiency, health and environmental impacts, and the cost of existing methods. Metal-organic frameworks (MOFs), a rapidly expanding family of crystalline porous materials, have shown great promise to address various separation challenges due to their well-defined pore size and unprecedented tunability in both composition and pore geometry. In the past decade, extensive research is performed on applications of MOF materials, including separation and capture of many gases and vapors, and liquid-phase separation involving both liquid mixtures and solutions. MOFs also bring new opportunities in enantioselective separation and are amenable to morphological control such as fabrication of membranes for enhanced separation outcomes. Here, some of the latest progress in the applications of MOFs for several key separation issues, with emphasis on newly synthesized MOF materials and the impact of their compositional and structural features on separation properties, are reviewed and highlighted.

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Selective Adsorption of Sulfur Dioxide in a Robust Metal–Organic Framework Material

Abstract: Selective adsorption of SO2 is realized in a porous metal–organic framework material, and in‐depth structural and spectroscopic investigations using X‐rays, infrared, and neutrons define the underlying interactions that cause SO2 to bind more strongly than CO2 and N2.

Cited by 221 publications

References 39 publications

A Single‐Molecule Propyne Trap: Highly Efficient Removal of Propyne from Propylene with Anion‐Pillared Ultramicroporous Materials

A Single‐Molecule Propyne Trap: Highly Efficient Removal of Propyne from Propylene with Anion‐Pillared Ultramicroporous Materials

Transistor‐Based Work‐Function Measurement of Metal–Organic Frameworks for Ultra‐Low‐Power, Rationally Designed Chemical Sensors

Metal–Organic Frameworks for Separation

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