Adsorption of Methane in Porous Materials as the Basis for the Storage of Natural Gas

Sapag, Karim; Vallone, Andrés; Blanco, A.; Solar, Carmen Quintana del

doi:10.5772/9846

Cited by 18 publications

(15 citation statements)

References 67 publications

(52 reference statements)

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“…Nevertheless, the level of methane adsorbed is similar, as in the case of carbonized samples (16.2-19.1 g•kg -1 ) and in the case of activated carbons (16.7-17.7 g•kg -1 - Table 6). These results confirm the findings of other researchers that the storage of methane in the porous material is not only controlled by the micropore volume of the material but that their geometry also plays an important role [33,34].…”

Section: Beech Wood Char As Methane Sorbentsupporting

confidence: 92%

Characterization of activated beech wood char – methane storage application

Pstrowska¹,

Kaczmarczyk²,

Czapor-Irzabek³

et al. 2018

Studia UBB Chemia

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Commercial beech wood char characterized by low volatile matter (5.3%) and high carbon content (94.5 %) was initially used as a potential feedstock to obtain the activated carbon for methane sorption. Microand mesopores volumes were determined to be at the level of 0.21 cm 3 •g-1 , while the specific surface area of the material was determined to be at the level of 416 m 2 •g-1. Carbonization carried out at the temperature range of 750-900 o C resulted in slight increase of the pore volume (up to the value of 0.23 cm 3 •g-1) and the specific surface area (up to the value of 480 m 2 •g-1). Upon the steam activation (up to the 50 % loss of the organic mass) the specific surface area increased substantially and was within the range of 887-943 m 2 •g-1 together with mico-and mesopores volumes that was within the range of 0.54-0.58 cm 3 •g-1. The maximum methane adsorption was determined for the sample activated at a temperature of 800 o C-17.7 g•kg-1 with a process reversibility of 84.2%. Considering the beech wood char price, its availability and well-known methods of its surface structure improvement, the obtained active carbons are interesting for their testing on a larger scale.

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Section: Beech Wood Char As Methane Sorbentsupporting

confidence: 92%

Characterization of activated beech wood char – methane storage application

Pstrowska¹,

Kaczmarczyk²,

Czapor-Irzabek³

et al. 2018

Studia UBB Chemia

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“…As an alternative method for natural gas storage, adsorbed natural gas (ANG) systems, which can store natural gas at a relatively lower pressure (3)(4), have been considered and intensively studied [6][7][8][9][10]. The CH 4 storage capacity is the same or even higher than that of compressed natural gas (CNG) at 20 MPa.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Methane Storage Capacity Using Upgraded Activated Carbon by KOH

et al. 2018

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In this study, a feasible experiment on adsorbed natural gas (ANG) was performed using activated carbons (ACs) with high surface areas. Upgraded ACs were prepared using chemical activation with potassium hydroxide, and were then applied as adsorbents for methane (CH4) storage. This study had three principal objectives: (i) upgrade ACs with high surface areas; (ii) evaluate the factors regulating CH4 adsorption capacity; and (iii) assess discharge conditions for the delivery of CH4. The results showed that upgraded ACs with surface areas of 3052 m2/g had the highest CH4 storage capacity (0.32 g-CH4/g-ACs at 3.5 MPa), which was over two times higher than the surface area and storage capacity of low-grade ACs (surface area = 1152 m2/g, 0.10 g-CH4/g-ACs). Among the factors such as surface area, packing density, and heat of adsorption in the ANG system, the heat of adsorption played an important role in controlling CH4 adsorption. The released heat also affected the CH4 storage and enhanced available applications. During the discharge of gas from the ANG system, the residual amount of CH4 increased as the temperature decreased. The amount of delivered gas was confirmed using different evacuation flow rates at 0.4 MPa, and the highest efficiency of delivery was 98% at 0.1 L/min. The results of this research strongly suggested that the heat of adsorption should be controlled by both recharging and discharging processes to prevent rapid temperature change in the adsorbent bed.

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“…rocks, shales and depleted coal beds, may contain large fractions of the world's future fossil energy in the form of light natural gas like methane [1]. New production methods like hydraulic fracturing or fracking by CO 2 injection allow trapped hydrocarbons to be produced directly from tight source rocks such as shale gas and shale oil systems [2]. The reason that this method works may be partly due to the difference in electron affinities of the CO 2 and CH 4 molecules [3].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic contribution to the van der Waals and the Casimir-Polder energies forCO2andCH4molecules near surfaces and thin films

et al. 2015

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In order to understand why carbon dioxide (CO2) and methane (CH4) molecules interact differently with surfaces, we investigate the Casimir-Polder energy of a linearly polarizable CO2 molecule and an isotropically polarizable CH4 molecule in front of an atomically thin gold film and an amorphous silica slab. We quantitatively analyze how the anisotropy in the polarizability of the molecule influences the van der Waals contribution to the binding energy of the molecule.

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Adsorption of Methane in Porous Materials as the Basis for the Storage of Natural Gas

Cited by 18 publications

References 67 publications

Characterization of activated beech wood char – methane storage application

Characterization of activated beech wood char – methane storage application

The Effects of Methane Storage Capacity Using Upgraded Activated Carbon by KOH

Anisotropic contribution to the van der Waals and the Casimir-Polder energies forCO2andCH4molecules near surfaces and thin films

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