Modern approaches to studying gas adsorption in nanoporous carbons

Morris, James R.; Contescu, Cristian I.; Chisholm, Matthew F.; Cooper, Valentino R.; Guo, Junjie; He, Lilin; Ihm, Yungok; Mamontov, Eugene; Melnichenko, Yuri B.; Olsen, Raina J.; Pennycook, Stephen J.; Stone, M. B.; Zhang, Hongxin; Gallego, Nidia C.

doi:10.1039/c3ta10701a

Cited by 50 publications

(34 citation statements)

References 54 publications

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“…At the same time, H 2 density in UMC mesopores is relatively low, close to the density of bulk gas, and undergoes only subtle changes with pressure. These findings were supported by theoretical calculations, using first-principle methods of treating the van der Waals interactions within density functional theory, which confirmed that H 2 density in subnanometer pores indeed could reach a liquidlike density even at 50 bar and 298 K [63,64]. The described SAS results demonstrate the advantage of adsorptive storage over compressed gas storage and emphasize the greater efficiency of micropores over mesopores in the adsorption process [65].…”

Section: Hydrogen Storage In Activated Carbonssupporting

confidence: 84%

Supercritical Fluids in Confined Geometries

Melnichenko

2016

Small-Angle Scattering From Confined and Interfacial Fluids

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Understanding the influence of confinement on the structure and thermodynamic properties of supercritical fluids in pores of different surface chemistry and topology is fundamental to the successful development and optimization of the variety of technologies involving fluid-solid interactions. Adsorption behavior of supercritical fluids (SCFs) is fundamentally different from that of subcritical vapors and this chapter begins with a general description of the specifics of the supercritical adsorption. Presented examples illustrate the capability of SAS methods to deliver unique, pore-size-dependent information on the properties of supercritical CO 2 , hydrogen, methane, and other fluids confined in pores of different engineered and natural porous solids. Applications of SAS for studying pore interconnectivity and structural stability of porous materials under pressure are also discussed.

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Section: Hydrogen Storage In Activated Carbonssupporting

confidence: 84%

Supercritical Fluids in Confined Geometries

Melnichenko

2016

Small-Angle Scattering From Confined and Interfacial Fluids

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“…However, as one of the most important greenhouse gases, the efficient storage of CH 4 is necessary [8][9][10][11][12]. Up to now, many studies have been carried out on the storage of large amounts of CH 4 [12].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO₂Activation

Yang

Feng

Chu

2014

International Journal of Chemical Engineering

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Resorcinol-formaldehyde resin polymer was used as raw material for preparation of carbon spheres. Samples were treated with CO2flow at 850°C by varying activation times. The CO2activation granted better pore development of pore structure. The experimental data of CH4adsorption as a function of equilibrium pressure was fitted by Langmuir and Dubinin-Astakhov (D-A) models. It was concluded that the high surface area and micropore volume of carbon spheres did unequivocally determine methane capacities. In addition, a thermodynamic study of the heat of adsorption of CH4on the carbon spheres was carried out. Adsorption of CH4on carbon spheres showed a decrease in the adsorption heat with CH4occupancy, and the heat of adsorption fell from 20.51 to 12.50 kJ/mol at 298 K and then increased to a little higher values at a very high loading (>0.70), indicating that CH4/CH4interactions within the adsorption layer became significant.

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“…The literature of carbon materials is very rich in studies dealing with gas uptake [30]. However, the diversity of experimental protocols and data interpretation models proposed is such that it is often chal lenging to reliably compare the results of different reports.…”

Section: Characterization Of the Benchmark And Go Materialsmentioning

confidence: 99%

The impact of surface chemistry and texture on the CO2 uptake capacity of graphene oxide

Alazmi

Tall

Hedhili

et al. 2018

Inorganica Chimica Acta

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ARTICLE INFO ABSTRACTThe influence of the synthesis route on the surface characteristics and CO 2 uptake of graphene oxide was studied. Powders derived from the classical Hummer's method approach and the so-called improved Hummer's method were benchmarked against zeolite 13X and certified carbon nanotubes. With a specific surface area of 283 m 2 g −1 and a CO 2 adsorption capacity of 2.1 mmol g −1 (at 273 K), the improved Hummer's product was superior to the other two nanocarbons tested.

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Modern approaches to studying gas adsorption in nanoporous carbons

Cited by 50 publications

References 54 publications

Supercritical Fluids in Confined Geometries

Supercritical Fluids in Confined Geometries

Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO₂Activation

The impact of surface chemistry and texture on the CO2 uptake capacity of graphene oxide

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Modern approaches to studying gas adsorption in nanoporous carbons

Cited by 50 publications

References 54 publications

Supercritical Fluids in Confined Geometries

Supercritical Fluids in Confined Geometries

Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO2Activation

The impact of surface chemistry and texture on the CO2 uptake capacity of graphene oxide

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Product

Resources

About

Comparative Study of Textural Characteristics on Methane Adsorption for Carbon Spheres Produced by CO₂Activation