Alteration of zeolite granule dimensions under krypton adsorption

Bering, B. P.; Красильникова, О. К.; Sarakhov, A. I.; Serpinskii, V. V.; Dubinin, M. M.

doi:10.1007/bf00958705

Cited by 20 publications

(20 citation statements)

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“…12,44,45 These measurements showed strain isotherms similar to carbonaceous microporous adsorbents: an initial moderate contraction at low gas pressure, followed by a noticeable expansion, see Figure 5. Reported strains were of the order of 10 À4 .…”

Section: Experimental Measurements Of Adsorption-induced Deformatmentioning

confidence: 76%

“…The reported trend, initial contraction followed by expansion, is the same as for the dilatometric measurements of zeolite granules. 12 To our knowledge, there has been no strain isotherms for zeolites obtained with in situ XRD with a resolution comparable to the strain isotherms for silica. 30,65 In the 2000s when a new type of porous materials, metalorganic frameworks (MOFs), gained its popularity, XRD studies on that material also revealed adsorption-induced deformation behavior.…”

Section: B Strains On the Microscopic Scalementioning

confidence: 89%

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Adsorption-induced deformation of nanoporous materials—A review

Gor

Huber

Bernstein

2017

Applied Physics Reviews

222

214

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When a solid surface accommodates guest molecules, they induce noticeable stresses to the surface and cause its strain. Nanoporous materials have high surface area and, therefore, are very sensitive to this effect called adsorption-induced deformation. In recent years, there has been significant progress in both experimental and theoretical studies of this phenomenon, driven by the development of new materials as well as advanced experimental and modeling techniques. Also, adsorption-induced deformation has been found to manifest in numerous natural and engineering processes, e.g., drying of concrete, water-actuated movement of non-living plant tissues, change of permeation of zeolite membranes, swelling of coal and shale, etc. In this review, we summarize the most recent experimental and theoretical findings on adsorption-induced deformation and present the state-of-the-art picture of thermodynamic and mechanical aspects of this phenomenon. We also reflect on the existing challenges related both to the fundamental understanding of this phenomenon and to selected applications, e.g., in sensing and actuation, and in natural gas recovery and geological CO2 sequestration.

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Section: Experimental Measurements Of Adsorption-induced Deformatmentioning

confidence: 76%

Section: B Strains On the Microscopic Scalementioning

confidence: 89%

Adsorption-induced deformation of nanoporous materials—A review

Gor

Huber

Bernstein

2017

Applied Physics Reviews

222

214

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“…All other pores >0.9 nm present Type IIb behavior. Type II behavior was found for a variety of zeolites and carbons in the past [ Bering et al , 1977; Fomkin , 2005; Krasil ' nikova et al , 1977]. Pone et al [2009] reported that the average volumetric strain of a confined bituminous coal subjected to 3.8 MPa confining stress and exposed to CO 2 for 57 days was about −0.34%, which could be explained by the deformation of the type II pores at low pressures.…”

Section: Resultsmentioning

confidence: 97%

Effects of CO₂adsorption on coal deformation during geological sequestration

Yang

Lin

et al. 2011

J. Geophys. Res.

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Adsorption‐induced deformation of coal during carbon dioxide sequestration in coal seams at elevated pressures and temperatures is studied with the quenched solid density functional theory (QSDFT) model. Two types of deformation behaviors in pores of different sizes can be identified from the dependence of the solvation pressure on the CO2 pressure. The smallest micropores (<0.5 nm, at 360 K) monotonically expand as the pressure increases. The larger pores (>0.5 nm) tend to contract at low pressures (1–10 MPa); however, this low‐pressure contraction is followed by expansion as the pressure increases further. Comparison with methane adsorption under the same geological conditions shows that the adsorption capacity of carbon dioxide is larger than that of methane. The difference in volumetric strain induced by adsorption of carbon dioxide and methane is most pronounced for micropores (≤2 nm), where the volumetric strain difference can be as large as 1.7% in the case of a 0.7 nm pore at 100 m depth, which could cause a significant reduction in permeability of the reservoir due to coal deformation. The contrast between the adsorption stress, resulting from the displacement of methane by CO2, decreases to 0.6% at 5 nm pores with increasing pore size and gradually diminishes in larger mesopores. The conclusions of the QSDFT model are validated by comparison with experimental data from the available literature and can be used for quantitative estimates of the effects of coal deformation.

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“…With the further increase of adsorption, the packing is densified and the hard-core repulsion interaction become dominant that lead to the increase of the solvation pressure. This behavior is typical for microporous carbon [49,50] and other microporous materials like zeolites [50][51][52].…”

Section: The Effect Of Surface Roughness On Confined Fluid Distributimentioning

confidence: 87%