Adsorption of gases on a polymer adsorbent MN-200 in the region of supercritical temperatures and pressures

Прибылов, А. А.; Murdmaa, K. O.

doi:10.1007/s11172-019-2659-0

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Equation (3) was successfully used for describing the adsorption process in various adsorbents, including zeolites [ 59 ], polymer sorbents [ 60 ], and ACs [ 61 ]. In our case, the maximum regression error did not exceed 3%, which made it possible to calculate a set of adsorption and thermodynamic parameters of the systems with high accuracy.…”

Section: Resultsmentioning

confidence: 99%

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: Resultsmentioning

confidence: 99%

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

et al. 2020

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“…where k 0 characterizes an adsorption system, k 1 , k 2 , k 3 are the temperature-dependent and numerically adjusted coefficients, and P is the equilibrium pressure expressed in Pa. Equation (3) was successfully used for describing the adsorption process in various adsorbents, including zeolites [59], polymer sorbents [60], and ACs [61]. In our case, the maximum regression error did not exceed 3%, which made it possible to calculate a set of adsorption and thermodynamic parameters of the systems with high accuracy.…”

Section: Methane Adsorption On the Peat-derived Carbon Adsorbentsmentioning

confidence: 99%

Nanoscale Thermodynamics

2021

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Methane adsorption on the Zr-BDC metal-organic framework structure at supercritical temperatures and pressures

2021

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Adsorption of gases on a polymer adsorbent MN-200 in the region of supercritical temperatures and pressures

Cited by 5 publications

References 7 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

Nanoscale Thermodynamics

Methane adsorption on the Zr-BDC metal-organic framework structure at supercritical temperatures and pressures

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