Adsorption accumulation of natural gas based on microporous carbon adsorbents of different origin

Меньщиков, И. Е.; Фомкин, А. А.; Tsivadze, A. Yu.; Школин, А. В.; Strizhenov, E. M.; Khozina, E. V.

doi:10.1007/s10450-016-9854-1

Cited by 30 publications

(10 citation statements)

References 39 publications

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“…Storage of adsorbed natural gas (ANG) represents an effective alternative to the known techniques of liquefied and compressed gas due to several reasons, such as high specific capacity, safety, and energy efficiency [1][2][3]. In most studies, when choosing an adsorbent for an ANG system, the most crucial criterion is the methane adsorption capacity [2][3][4]. Among adsorbents, activated carbons (AC) [2,[4][5][6][7][8], metal-organic frameworks (MOF) [5,9,10], and porous organic polymers (POP) [10,11] are the most promising for use in ANG technology because of their high adsorption capacity of methane, which is the major component of natural gas.…”

Section: Introductionmentioning

confidence: 99%

“…In most studies, when choosing an adsorbent for an ANG system, the most crucial criterion is the methane adsorption capacity [2][3][4]. Among adsorbents, activated carbons (AC) [2,[4][5][6][7][8], metal-organic frameworks (MOF) [5,9,10], and porous organic polymers (POP) [10,11] are the most promising for use in ANG technology because of their high adsorption capacity of methane, which is the major component of natural gas. It should be noted that the utilization of these materials for the ANG storage systems implies that they meet the requirements imposed on these systems.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamics of Adsorbed Methane Storage Systems Based on Peat-Derived Activated Carbons

et al. 2020

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Two activated carbons (ACs) were prepared from peat using thermochemical K2SO4 activation at 1053–1133 K for 1h, and steam activation at 1173K for 30 (AC-4) and 45 (AC-6) min. The steam activation duration affected the microporous structure and chemical composition of ACs, which are crucial for their adsorption performance in the methane storage technique. AC-6 displays a higher micropore volume (0.60 cm3/g), specific BET surface (1334 m2/g), and a lower fraction of mesopores calculated from the benzene vapor adsorption/desorption isotherms at 293K. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and small-angle X-ray scattering (SAXS) investigations of ACs revealed their heterogeneous morphology and chemical composition determined by the precursor and activation conditions. A thermodynamic analysis of methane adsorption at pressures up to 25 MPa and temperatures from 178 to 360K extended to impacts of the nonideality of a gaseous phase and non-inertness of an adsorbent made it possible to evaluate the heat effects and thermodynamic state functions in the methane-AC adsorption systems. At 270 K and methane adsorption value of ~8 mmol/g, the isosteric heat capacity of the methane-AC-4 system exceeded by ~45% that evaluated for the methane-AC-6 system. The higher micropore volume and structural heterogeneity of the more activated AC-6 compared to AC-4 determine its superior methane adsorption performance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermodynamics of Adsorbed Methane Storage Systems Based on Peat-Derived Activated Carbons

et al. 2020

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“…[ 35,46 ] ACs can be prepared from a variety of raw materials, including i) materials of plant origin (e.g., corn grains and cobs, [ 69,70 ] coconuts, [ 71 ] and sorghum [ 72 ] ), ii) wood‐based materials (e.g., charcoal and pulp), and iii) different metamorphisms of fossil fuels (e.g., petroleum coke, [ 73 ] petroleum‐pitch residue, [ 74 ] and anthracite [ 75 ] ). [ 35,76,77 ] The abundance of these materials reduces the cost of preparing ACs. [ 76 ] Polymers, [ 78 ] as well as metal and nonmetal carbides, [ 79,80 ] can also serve as raw materials for ACs.…”

Section: Adsorbentsmentioning

confidence: 99%

Adsorbed Natural Gas Storage for Onboard Applications

Wee

et al. 2021

Advanced Sustainable Systems

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Given its abundance and clean combustion, natural gas (NG) is one of the leading sources of energy to meet present demands. However, the storage and transportation of NG remain challenging. Besides the commonly used NG storage methods such as compression and liquefaction, adsorbed NG is an attractive alternative. Here, the requirements for vehicles to be powered by adsorbed natural gas (ANG) are examined. Despite top‐performing adsorbents and present‐day engineering solutions, there remain obstacles that prevent vehicles fueled by ANG from becoming commonplace. Herein, these challenges are highlighted to inspire engineering solutions for onboard ANG systems.

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“…Microporous (or nanoporous because of nanoscale pores) carbon adsorbents are the most promising materials today for application on ANG due to their high activity to methane, mechanical strength, and the possibility to increase packing density by shaping under pressure [26][27][28], which ensures the maximum volumetric storage capacity of the system. We used the industrial granulated activated carbon AU-1, which possessed a remarkable adsorption activity to methane and could potentially be used in ANG systems [29].…”

Section: Monolithic Carbon Adsorbentmentioning

confidence: 99%

Heat and Mass Transfer in an Adsorbed Natural Gas Storage System Filled with Monolithic Carbon Adsorbent during Circulating Gas Charging

et al. 2021

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Adsorbed natural gas (ANG) technology is a promising alternative to traditional compressed (CNG) and liquefied (LNG) natural gas systems. Nevertheless, the energy efficiency and storage capacity of an ANG system strongly depends on the thermal management of its inner volume because of significant heat effects occurring during adsorption/desorption processes. In the present work, a prototype of a circulating charging system for an ANG storage tank filled with a monolithic nanoporous carbon adsorbent was studied experimentally under isobaric conditions (0.5–3.5 MPa) at a constant volumetric flow rate (8–18 m3/h) or flow mode (Reynolds number at the adsorber inlet from 100,000 to 220,000). The study of the thermal state of the monolithic adsorbent layer and internal heat exchange processes during the circulating charging of an adsorbed natural gas storage system was carried out. The correlation between the gas flow mode, the dynamic gas flow temperature, and the heat transfer coefficient between the gas and adsorbent was determined. A one-dimensional mathematical model of the circulating low-temperature charging process was developed, the results of which correspond to the experimental measurements.

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Adsorption accumulation of natural gas based on microporous carbon adsorbents of different origin

Cited by 30 publications

References 39 publications

Thermodynamics of Adsorbed Methane Storage Systems Based on Peat-Derived Activated Carbons

Thermodynamics of Adsorbed Methane Storage Systems Based on Peat-Derived Activated Carbons

Adsorbed Natural Gas Storage for Onboard Applications

Heat and Mass Transfer in an Adsorbed Natural Gas Storage System Filled with Monolithic Carbon Adsorbent during Circulating Gas Charging

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