A Step Forward in Understanding the Hydrogen Adsorption and Compression on Activated Carbons

Ramírez-Vidal, Pamela; Canevesi, Rafael Luan Sehn; Sdanghi, Giuseppe; Schaefer, Sébastien; Maranzana, Gaël; Celzard, Alain; Fierro, Vanessa

doi:10.1021/acsami.0c22192

Cited by 56 publications

(38 citation statements)

References 67 publications

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“…More details are given elsewhere. 48,49 The carbon, oxygen, and nitrogen contents on the surface were determined by X-ray photoelectron spectroscopy (XPS) using an ESCAPlus OMICROM system with a hemispherical electron energy analyzer with an analysis area of 1.75 × 2.75 mm. The spectrometer was operated at 10 kV and 15 mA using a nonmonochromatized Mg X-ray source (1253.6 eV) under vacuum (<5 × 10 −9 Torr).…”

Section: Methodsmentioning

confidence: 99%

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture

Canevesi

Schaefer

Izquierdo

et al. 2022

ACS Appl. Nano Mater.

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The presence of heteroatoms, such as nitrogen or oxygen, on the surface of nanoporous activated carbons (ACs) promotes CO 2 uptake due to the stronger specific interactions with these heteroatoms. However, heteroatom doping post-treatments often decrease the surface area and pore volume of ACs, and it is difficult to separate heteroatom doping from textural effects. The objective of this paper was to investigate when the control of adsorption shifts from surface chemistry to textural characteristics. For this purpose, three different types of commercial ACs were doped with nitrogen and/or oxygen by an easy and cheap method and then subjected to CO 2 adsorption experiments up to 32 bar at 273 K. We evaluated the effect of the surface chemistry and texture, considering the whole range of porosity on CO 2 adsorption as a function of pressure. Below atmospheric pressure, CO 2 adsorption is mainly controlled by surface chemistry, increasing with O + N content, and the narrowest pores are responsible for more than 60% of CO 2 adsorption at pressures below 0.01 bar. Above atmospheric pressure, from 1 to about 5 bar, the textural properties become more significant to finally take control of the adsorption phenomena at pressures above 5 bar. We have undoubtedly shown that the adsorption capacity is only a function of the total pore volume and that the adsorbed density is even higher than that of liquid CO 2 in ultramicropores (pore diameter less than 0.7 nm) at pressures of 15 bar and above.

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Section: Methodsmentioning

confidence: 99%

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture

Canevesi

Schaefer

Izquierdo

et al. 2022

ACS Appl. Nano Mater.

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“…215,266 Recent reports indicate that gas uptake may be better predicted using porosity determined according to DFT rather than classical methods. 280,281 DFT methods have also been employed in recent years to combine isotherms determined using two separate gases to yield a single PSD. 91,225 It is useful to compare measures of porosity derived using DFT methods to those using classical methods.…”

Section: Reviewmentioning

confidence: 99%

Modulating the porosity of carbons for improved adsorption of hydrogen, carbon dioxide, and methane: a review

Blankenship

Mokaya

2022

Mater. Adv.

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“…Figure 2 shows the feasible techniques for hydrogen storage, which are classified into four types: high-pressure gas storage, hydrogen liquefaction, chemical absorption, and physical adsorption [13][14][15]. Currently, a method involving physically compressed storage with high-pressure tanks is the only commercialized hydrogen storage technique for mobile systems.…”

Section: Hydrogen Storage Techniquesmentioning

confidence: 99%

Recent Progress Using Solid-State Materials for Hydrogen Storage: A Short Review

et al. 2022

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With the rapid growth in demand for effective and renewable energy, the hydrogen era has begun. To meet commercial requirements, efficient hydrogen storage techniques are required. So far, four techniques have been suggested for hydrogen storage: compressed storage, hydrogen liquefaction, chemical absorption, and physical adsorption. Currently, high-pressure compressed tanks are used in the industry; however, certain limitations such as high costs, safety concerns, undesirable amounts of occupied space, and low storage capacities are still challenges. Physical hydrogen adsorption is one of the most promising techniques; it uses porous adsorbents, which have material benefits such as low costs, high storage densities, and fast charging–discharging kinetics. During adsorption on material surfaces, hydrogen molecules weakly adsorb at the surface of adsorbents via long-range dispersion forces. The largest challenge in the hydrogen era is the development of progressive materials for efficient hydrogen storage. In designing efficient adsorbents, understanding interfacial interactions between hydrogen molecules and porous material surfaces is important. In this review, we briefly summarize a hydrogen storage technique based on US DOE classifications and examine hydrogen storage targets for feasible commercialization. We also address recent trends in the development of hydrogen storage materials. Lastly, we propose spillover mechanisms for efficient hydrogen storage using solid-state adsorbents.

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A Step Forward in Understanding the Hydrogen Adsorption and Compression on Activated Carbons

Cited by 56 publications

References 67 publications

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture

Modulating the porosity of carbons for improved adsorption of hydrogen, carbon dioxide, and methane: a review

Recent Progress Using Solid-State Materials for Hydrogen Storage: A Short Review

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A Step Forward in Understanding the Hydrogen Adsorption and Compression on Activated Carbons

Cited by 56 publications

References 67 publications

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO2 Capture

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO2 Capture

Modulating the porosity of carbons for improved adsorption of hydrogen, carbon dioxide, and methane: a review

Recent Progress Using Solid-State Materials for Hydrogen Storage: A Short Review

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Product

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Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture

Roles of Surface Chemistry and Texture of Nanoporous Activated Carbons in CO₂ Capture