A titanium carbide-derived novel tetrafluoromethane adsorbent with outstanding adsorption performance

Choi, Seung Wan; Lee, Da Hee; Kim, Janghyuk; Kim, Jihyun; Park, Jong Ho; Beum, Hee Tae; Lim, Dae Soon; Lee, Ki Bong

doi:10.1016/j.cej.2016.11.102

Cited by 27 publications

(10 citation statements)

References 41 publications

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“…The CF 4 sorption amount of Ni-MOF is the highest among the reported MOF materials and only second to that of a kind of carbon material named TiC-CDC800H (66.3 cm 3 g −1 at 298 K and 100 kPa). 36 Notably, the CF 4 sorption amount of Ni-MOF at 0.1 bar and 298 K was 25.8 cm 3 g −1 , which was higher than that of TiC-CDC800H (14.3 cm 3 g −1 at 298 K and 0.1 bar). This shows that Ni-MOF has a very strong adsorption capacity for CF 4 .…”

Section: Resultsmentioning

confidence: 84%

“…The single-component CF 4 , NF 3 , and N 2 gas adsorption isotherms of both MOFs were measured at 273 and 298 K. As shown in Figure a, the uptakes of CF 4 and N 2 for Ni-MOF are 65.5 and 12.0 cm 3 g –1 , respectively, at 298 K and 1 bar. The CF 4 sorption amount of Ni-MOF is the highest among the reported MOF materials and only second to that of a kind of carbon material named TiC-CDC800H (66.3 cm 3 g –1 at 298 K and 100 kPa) . Notably, the CF 4 sorption amount of Ni-MOF at 0.1 bar and 298 K was 25.8 cm 3 g –1 , which was higher than that of TiC-CDC800H (14.3 cm 3 g –1 at 298 K and 0.1 bar).…”

Section: Resultsmentioning

confidence: 91%

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Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

Wang

Lan

Guan

et al. 2022

ACS Appl. Mater. Interfaces

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The capture and separation of fluorinated gases (F-gases) from N2 has the potential to not only reduce greenhouse gas emissions but also provide economic benefits for the semiconductor industry. In this work, two Ni-based metal–organic frameworks (MOFs), Ni-MOF (Ni(ina)2, ina = isonicotinic acid) and amine-functionalized NH 2 –Ni-MOF (Ni(3-ain)2, 3-ain = 3-aminoisonicotinic acid), were constructed for capturing F-gases (CF4 and NF3). At ambient conditions, both materials exhibit very high CF4 sorption capacities (2.92 mmol g–1 for Ni-MOF and 2.69 mmol g–1 for NH 2 –Ni-MOF). In addition, NH 2 –Ni-MOF exhibited a record selectivity of 46.3 for the CF4/N2 mixture at 298 K and 100 kPa, surpassing all benchmark adsorbents, including Ni-MOF (34.7). The kinetic adsorption tests demonstrated that Ni-MOF and NH 2 –Ni-MOF performed well for CF4/N2 and NF3/N2 mixtures. According to grand canonical Monte Carlo (GCMC) simulations, CF4 or NF3 interacts with NH 2 –Ni-MOF by multiple van der Waals interactions, resulting in stronger interaction than N2. More importantly, dynamic breakthrough experiments verified the practical separation potential of the two materials for CF4/N2 and NF3/N2 mixtures.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 91%

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

Wang

Lan

Guan

et al. 2022

ACS Appl. Mater. Interfaces

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“…Adsorptive separation based on nanoporous adsorbents is a promising method for recovering and purifying F-gases from waste streams because of its high energy efficiency and operational feasibility . A suitable adsorbent plays a vital role in the overall performance of the adsorptive separation process, − in particular, to capture F-gases from waste streams with a low F-gas concentration (from ppm to several percent). Porous adsorbents such as activated carbon and zeolites have been studied for the adsorptive separation of NF 3 /N 2 , CF 4 /N 2 , and SF 6 /N 2 mixtures. − However, the selectivity of F-gases/N 2 or activated carbon is undistinguished due to its chaotic pore structures.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Interface-Induced H...F Charge Transfer in Ultramicroporous Metal–Organic Frameworks for Perfluorinated Gas Separation

Yan

Zhang

et al. 2022

Ind. Eng. Chem. Res.

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Fluorinated electron gases (F-gases) are widely used in semiconductor manufacturing because of their unique plasma reactivity with silicon-based semiconductor materials. However, the low conversion efficiency of these F-gases in the plasma process makes the vent gases contain a certain concentration of F-gases, which causes environmental pollution and global warming. In this study, three ultramicroporous metal–organic frameworks M3(HCOO)6 (M = Co, Ni, Mn) were prepared for the separation and purification of F-gases through H...F interaction-induced charge transfer on the pore surface. Impressive F-gas adsorption capacities and record breakthrough selectivities for NF3/N2, CF4/N2, and SF6/N2 mixtures were achieved in M3(HCOO)6 MOFs. Density-functional theory (DFT) calculations and grand canonical Monte Carlo (GCMC) simulation studies demonstrated that the adsorption-induced charge exchange between the F atom in F-gases and the H atom in HCOO– accounts for the high performance of F-gases/N2 separation. Systematic experimental investigations including equilibrium gas adsorption, instant adsorption rates, and dynamic breakthrough experiments also confirmed the efficient performance of M3(HCOO)6 MOFs for F-gas capture.

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“…To achieve an efficient CF 4 capture, several technologies based on thermal decomposition, plasma treatment, absorption, adsorption, cryogenic recovery, and membrane separation have been developed. Among them, physical adsorption using efficient nanoporous adsorbents ,,− is considered as the most competitive technology for capturing CF 4 due to its low energy consumption, low cost, and easy management. However, only some limited studies in the literature are devoted to CF 4 capture using nanoporous adsorbents.…”

Section: Introductionmentioning

confidence: 99%

CF₄ Capture and Separation of CF₄–SF₆ and CF₄–N₂ Fluid Mixtures Using Selected Carbon Nanoporous Materials and Metal–Organic Frameworks: A Computational Study

2022

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The adsorption of pure fluid carbon tetrafluoride and the separation of CF 4 –SF 6 and CF 4 –N 2 fluid mixtures using representative nanoporous materials have been investigated by employing Monte Carlo and molecular dynamics simulation techniques. The selected materials under study were the three-dimensional carbon nanotube networks, pillared graphene using carbon nanotube pillars, and the SIFSIX-2-Cu metal–organic framework. The selection of these materials was based on their previously reported efficiency to separate fluid SF 6 –N 2 mixtures. The pressure dependence of the thermodynamic and kinetic separation selectivity for the CF 4 –SF 6 and CF 4 –N 2 fluid mixtures has therefore been investigated, to provide deeper insights into the molecular scale phenomena taking place in the investigated nanoporous materials. The results obtained have revealed that under near-ambient pressure conditions, the carbon-based nanoporous materials exhibit a higher gravimetric fluid uptake and thermodynamic separation selectivity. The SIFSIX-2-Cu material exhibits a slightly higher kinetic selectivity at ambient and high pressures.

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A titanium carbide-derived novel tetrafluoromethane adsorbent with outstanding adsorption performance

Cited by 27 publications

References 41 publications

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

Adsorption Interface-Induced H...F Charge Transfer in Ultramicroporous Metal–Organic Frameworks for Perfluorinated Gas Separation

CF₄ Capture and Separation of CF₄–SF₆ and CF₄–N₂ Fluid Mixtures Using Selected Carbon Nanoporous Materials and Metal–Organic Frameworks: A Computational Study

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A titanium carbide-derived novel tetrafluoromethane adsorbent with outstanding adsorption performance

Cited by 27 publications

References 41 publications

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF4 and NF3 with Record Selectivity

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF4 and NF3 with Record Selectivity

Adsorption Interface-Induced H...F Charge Transfer in Ultramicroporous Metal–Organic Frameworks for Perfluorinated Gas Separation

CF4 Capture and Separation of CF4–SF6 and CF4–N2 Fluid Mixtures Using Selected Carbon Nanoporous Materials and Metal–Organic Frameworks: A Computational Study

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Product

Resources

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Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

Amino-Functionalized Microporous MOFs for Capturing Greenhouse Gases CF₄ and NF₃ with Record Selectivity

CF₄ Capture and Separation of CF₄–SF₆ and CF₄–N₂ Fluid Mixtures Using Selected Carbon Nanoporous Materials and Metal–Organic Frameworks: A Computational Study