Experimental Determination of the CH<sub>4</sub> and CO<sub>2</sub> Pure Gas Adsorption Isotherms on Different Activated Carbons

Peredo-Mancilla, Deneb; Hort, Cécile; Jeguirim, Mejdi; Ghimbeu, Camélia Matei; Limousy, Lionel; Bessières, David

doi:10.1021/acs.jced.8b00297

Cited by 15 publications

(4 citation statements)

References 43 publications

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“…Growth is continuous provided the phases are supplied either through the porous substrate (guest) or through the fibers themselves (guest or host). Materials of varied origins all exhibit a behavior similar to that described below for a well-characterized, A-BAC-SP bead-shaped commercial activated carbon. , The argon isotherm indicates that the material is mainly microporous . The type-V water sorption isotherm is typical of unmodified activated carbon (see Supporting Information SI).…”

mentioning

confidence: 61%

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

Venet

Brown

2021

Crystal Growth & Design

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Video microscopy reveals a novel morphology and growth process of a gas hydrate, promoted here by a porous activated carbon substrate astride a guest–host interface. Surface pores of the substrate continuously extrude hollow cyclopentane hydrate fibers, fed by flow of the guest through the substrate. Growth continues even when it pushes the substrate away from the interface, fed by flow of either fluid through the fibers themselves, so that fiber growth is limited here by the size of the setup. This remarkable process overcomes the gas hydrate mass-transfer bottleneck, which in quiescent systems limits the conversion of water and guest to a thin impervious hydrate crust between the two phases.

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confidence: 61%

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

Venet

Brown

2021

Crystal Growth & Design

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“…Cellulosic AC doped with Cu 48 25 15 [22] Carbon foam 15.2 0 5 [23] Chemically activated AC from olive stone 10 50 1 [9] Modified AC from fir bark 7l 0 1 [24] AC Norit RX * 2.5 30 5 [25] AC from black locust activated with KOH 5.05 25 1 [26] AC doped with N,S and activated with potassium salts 3.04-3.99 25 1 [27] The asterisk (*) denotes the material used in this study.…”

Section: Barmentioning

confidence: 99%

The Effect of Rotation on Gas Storage in Nanoporous Materials

Mitropoulos,

Kosheleva,

Kostoglou

et al. 2024

Separations

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Nanoporous materials offer a promising solution for gas storage applications in various scientific and engineering domains. However, several crucial challenges need to be addressed, including adsorptive capacity, rapid loading, and controlled gas delivery. A potential approach to tackle these issues is through rotation-based methods. In this study, we investigate the impact of rotation on CO2 adsorption using activated carbon, both at the early and late stages of the adsorption process. Towards this direction, three sets of experiments were conducted: (i) adsorption isotherm with rotation at each gas loading, (ii) adsorption kinetics with multiple rotations performed in sequence 15 min after CO2 introduction, and (iii) adsorption kinetics with a single rotation after 40 h of adsorption and repetition after another 20 h. For the first two cases, the comparison was performed by respective measurements without rotation, while for the last case, results were compared to a theoretical pseudo-first-order kinetic curve. Our findings demonstrate that rotation enhances the adsorptive capacity by an impressive 54%, accelerates kinetics by a factor of 3.25, and enables controllable gas delivery by adjusting the angular velocity. These results highlight rotation as a promising technique to optimize gas storage in nanoporous materials, facilitating advancements in numerous scientific and engineering applications.

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“…Thermocouples located at several points of the instrument allowed verifying the non-appearance of temperature gradients within the system. This setup was designed to operate over wide a range of pressure (0-3.3 MPa) and temperature up to 373.15 K [50,51].…”

Section: High Pressure Manometric Adsorption Setupmentioning

confidence: 99%

CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

et al. 2018

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The aim of the present work is to study the effect of different activation methods for the production of a biomass-based activated carbon on the CO 2 and CH 4 adsorption. The influence of the activation method on the adsorption uptake was studied using three activated carbons obtained by different activation methods (H 3 PO 4 chemical activation and H 2 O and CO 2 physical activation) of olive stones. Methane and carbon dioxide pure gas adsorption experiments were carried out at two working temperatures (303.15 and 323.15 K). The influence of the activation method on the adsorption uptake was studied in terms of both textural properties and surface chemistry. For the three adsorbents, the CO 2 adsorption was more important than that of CH 4 . The chemically-activated carbon presented a higher specific surface area and micropore volume, which led to a higher adsorption capacity of both CO 2 and CH 4 . For methane adsorption, the presence of mesopores facilitated the diffusion of the gas molecules into the micropores. In the case of carbon dioxide adsorption, the presence of more oxygen groups on the water vapor-activated carbon enhanced its adsorption capacity.

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Experimental Determination of the CH₄ and CO₂ Pure Gas Adsorption Isotherms on Different Activated Carbons

Cited by 15 publications

References 43 publications

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

The Effect of Rotation on Gas Storage in Nanoporous Materials

CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

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Experimental Determination of the CH4 and CO2 Pure Gas Adsorption Isotherms on Different Activated Carbons

Cited by 15 publications

References 43 publications

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

A Novel Gas Hydrate Morphology: Massive Hollow Fiber Growth on a Porous Substrate

The Effect of Rotation on Gas Storage in Nanoporous Materials

CO2 and CH4 Adsorption Behavior of Biomass-Based Activated Carbons

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Product

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Experimental Determination of the CH₄ and CO₂ Pure Gas Adsorption Isotherms on Different Activated Carbons