Cryogenic neon adsorption on Co3(ndc)3(dabco) metal-organic framework

Ribeiro, Rui P.P.L.; Barreto, J.; Xavier, M.; Martins, D.; Esteves, Isabel A. A. C.; Branco, Moritz; Tirolien, T.; Mota, José P. B.; Bonfait, G.

doi:10.1016/j.micromeso.2020.110055

Cited by 12 publications

(10 citation statements)

References 24 publications

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“…The uncommon stepwise adsorption and hysteretic desorption behavior for CO 2 at 273 K has been interpreted in terms of the osmotic thermodynamic theory. The data reported here add important knowledge about the adsorption properties of Zn(dcpa), as prior studies about this MOF are limited to a few publications [34,35].…”

Section: Introductionmentioning

confidence: 89%

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

2021

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Adsorption-based processes using metal-organic frameworks (MOFs) are a promising option for carbon dioxide (CO2) capture from flue gases and biogas upgrading to biomethane. Here, the adsorption of CO2, methane (CH4), and nitrogen (N2) on Zn(dcpa) MOF (dcpa (2,6-dichlorophenylacetate)) is reported. The characterization of the MOF by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), and N2 physisorption at 77 K shows that it is stable up to 650 K, and confirms previous observations suggesting framework flexibility upon exposure to guest molecules. The adsorption equilibrium isotherms of the pure components (CO2, CH4, and N2), measured at 273–323 K, and up to 35 bar, are Langmuirian, except for that of CO2 at 273 K, which exhibits a stepwise shape with hysteresis. The latter is accurately interpreted in terms of the osmotic thermodynamic theory, with further refinement by assuming that the free energy difference between the two metastable structures of Zn(dcpa) is a normally distributed variable due to the existence of different crystal sizes and defects in a real sample. The ideal selectivities of the equimolar mixtures of CO2/N2 and CO2/CH4 at 1 bar and 303 K are 12.8 and 2.9, respectively, which are large enough for Zn(dcpa) to be usable in pressure swing adsorption.

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Section: Introductionmentioning

confidence: 89%

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

2021

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“…Measurements of nitrogen adsorption at 77 K on our sample give a saturation loading of 0.022 mol/g, which can be converted into pore volume by dividing by the liquid density, ρ L = 0.81 g/cm 3 . The value obtained, 0.761 cm 3 /g, is very close to our predicted value, 0.743 cm 3 /g (2.6% difference).…”

Section: Results and Discussionmentioning

confidence: 99%

“…This MOF is reportedly thermally stable up to 523 K and has a high hydrogen adsorption capacity (2.45 wt % at 77 K and 1 bar) . Despite these promising features, as far as we know, there are very few publications available in the literature on this material. , The high H 2 adsorption capacity of Co 3 (ndc) 3 (dabco), combined with its large surface area and narrow channels, motivated us to study this MOF as a potential medium for CH 4 storage. Since the adsorption capacity is correlated with the pore size distribution, internal surface area, and micropore volume, we also study a few simple methods for determining these structural parameters for Co 3 (ndc) 3 (dabco) based on geometrical considerations and molecular simulations.…”

Section: Introductionmentioning

confidence: 99%

Surface Area and Porosity of Co₃(ndc)₃(dabco) Metal–Organic Framework and Its Methane Storage Capacity: A Combined Experimental and Simulation Study

Ribeiro

Mota

2021

J. Phys. Chem. C

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Metal−organic frameworks (MOFs) are among the porous materials with the highest potential for adsorptive methane (CH 4 ) storage. Here, we combine experimental measurements with molecular simulations to characterize the surface area and porosity of Co 3 (ndc) 3 (dabco)a very interesting but less studied MOFand to assess its CH 4 adsorption capacity. The experiments cover the pressure and temperature ranges of 0−30 bar and 273−323 K, respectively. The MOF's specific pore volume and surface area are determined using various approaches based on geometrical considerations and molecular simulations. The limitations and advantages of each approach are discussed. The experimental data are in excellent agreement with purely predictive molecular simulations using a force field based almost exclusively on the TraPPE-UA force field. The evaluation of the volumetric adsorption capacity of Co 3 (ndc) 3 (dabco) confirms that it is indeed a good candidate for CH 4 storage. For a charge pressure of 35 bar and a delivery pressure of 5 bar, Co 3 (ndc) 3 (dabco) has a CH 4 working capacity of 93 v/v (the amount of stored CH 4 measured as volume of gas under standard temperature and pressure conditions per volume of MOF) at room temperature, which is close to the performance of other promising materials such as MOF-5,

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“…The Fe3O4 NP´s were characterized by scanning electron microscopy (SEM), figure 2 (a) shows a secondary electrons image obtained at 15 kV, in this image is possible to identify the morphology and the distribution size of the Fe3O4 NP´s synthesized by Cnicus Benedictus. The Fe3O4 NP´s show agglomeration due to the steric effect of the nanoparticles [20]. However, in figure 2 (b), the individual nanoparticles confined in a cluster are observed.…”

Section: Scanning Electron Microscopymentioning

confidence: 92%

“…In this sense, the new directrix for the synthesis of Fe3O4 nanoparticles is focused on the green chemical. Organic and biocompatibles molecules such as vitamin B12, glucose cellulose, amino acid and even plant extracts has been employed as stabilizing and/or reducing agents [16][17][18][19][20] . It is important to emphasize that the search for new alternatives that promote sustainable chemistry has become a priority issue.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Nanoparticles of Fe3O4 Biosynthesized by Cnicus Benedictus Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

Ruíz-Baltazar¹,

Reyes-López²,

Larrañaga-Ordáz³

et al. 2020

Preprint

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Currently, the use of sustainable chemistry as an ecological alternative for the generation of products or processes, free of polluting substance has assumed a preponderant role. The aim of this work is propose a bioinspired, facile, at low cost, non-toxic and environmentally friendly alternative to obtaining magnetic nanoparticles whit a majority phase of magnetite (Fe3O4). Is important to empathize that the synthesis was based on the chemical reduction through the Cnicus Benedictus extract, whose use as reducing agent has not been reported in the synthesis of iron oxides nanoparticles. In addition, the Cnicus Benedictus is abundant endemic plant in Mexico, with several medicinal properties and a large number of natural antioxidants. The obtained nanoparticles exhibited significant magnetic and antibacterial properties and an enhanced photocatalytic activity. The crystallite size of the Fe3O4 nanoparticles (Fe3O4 NP’s) was calculated by Williamson-Hall method. The photocatalytic properties of the Fe3O4 NP´s were studied by kinetics absorptions models in the Congo red (CR) degradation. Finally the antibacterial effect of the Fe3O4 NP´s were evaluated mediated the Kirby-Bauer method against E. coli and S. aureus bacteria. This route offers a green alternative to obtain Fe3O4 NP´s with remarkable magnetic, photocatalytic and antibacterial properties.

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Cryogenic neon adsorption on Co3(ndc)3(dabco) metal-organic framework

Cited by 12 publications

References 24 publications

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

Surface Area and Porosity of Co₃(ndc)₃(dabco) Metal–Organic Framework and Its Methane Storage Capacity: A Combined Experimental and Simulation Study

Magnetic Nanoparticles of Fe<sub>3</sub>O<sub>4</sub> Biosynthesized by <em>Cnicus Benedictus</em> Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

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Cryogenic neon adsorption on Co3(ndc)3(dabco) metal-organic framework

Cited by 12 publications

References 24 publications

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

Adsorption of Carbon Dioxide, Methane, and Nitrogen on Zn(dcpa) Metal-Organic Framework

Surface Area and Porosity of Co3(ndc)3(dabco) Metal–Organic Framework and Its Methane Storage Capacity: A Combined Experimental and Simulation Study

Magnetic Nanoparticles of Fe<sub>3</sub>O<sub>4</sub> Biosynthesized by <em>Cnicus Benedictus</em> Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

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Surface Area and Porosity of Co₃(ndc)₃(dabco) Metal–Organic Framework and Its Methane Storage Capacity: A Combined Experimental and Simulation Study