Temperature and pressure effects on CO2 and CH4 permeation through MFI zeolite membranes

Poshusta, Joseph C.; Noble, Richard D.; Falconer, John L.

doi:10.1016/s0376-7388(99)00073-3

Cited by 165 publications

(75 citation statements)

References 28 publications

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“…Attempts have been made to characterize the parallel non-zeolite pores by the initial transient permeate responses after step changes in the feed to empty membranes Gardner et al, 2002b), by permporosimetry (Deckman et al, 2001;Hedlund et al, 2002), confocal microscopy (Bonilla et al, 2001a,b;Nair et al, 2001;Nelson et al, 2001), modeling steady-state fluxes including contributions from Knudsen diffusion and viscous flow (Poshusta et al, 1999;van de Graaf et al, 1999), and the permeation behavior after partial calcination (Lin et al, 1998;van de Graaf et al, 1999). The initial transient permeate response through ZSM-5 membranes at 383 K to a feed step change from 0 to 6 kPa of i-C 4 showed a two-step approach to steady state, from which we concluded that about 4% of the i-C 4 flow was through parallel non-zeolite pores (Gardner et al, 2002b).…”

Section: Transient Permeationmentioning

confidence: 99%

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

2004

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Section: Transient Permeationmentioning

confidence: 99%

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

2004

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“…Zeolites have superior thermal, mechanical, chemical, and high-pressure stability compared with their polymer counterparts. Zeolite membranes, such as FAU, [10,11] DDR, [12,13] ERI, [14] CHA, [15][16][17] and MFI [18][19][20][21] types, have been employed for CO 2 /CH 4 separation. Although these membranes have demonstrated high selectivity for CO 2 over CH 4 , some of them have low permeability driven by a high pressure drop.…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20][21] To address the thermal stability of the Co 3 A C H T U N G T R E N N U N G (HCOO) 6 membranes, the permeation at different temperatures (from 0 to 608C) was evaluated. As expected, it is found that the CO 2 /CH 4 separation factor of the membrane operated at 25 and 0 8C increased from 12.63 to 15.95 (Figure 7 a) (Figure 7 a).…”

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confidence: 99%

Co₃(HCOO)₆ Microporous Metal–Organic Framework Membrane for Separation of CO₂/CH₄ Mixtures

Zou

Zhang

Thomas

et al. 2011

Chemistry A European J

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Continuous metal-organic framework-type Co(3)(HCOO)(6) intergrown films with a one-dimensional zigzag channel system and pore aperture of 5.5 Å are prepared by secondary growth on preseeded macroporous glass-frit disks and silicon wafers. The adsorption behavior of CO(2) or CH(4) single gases on the Co(3)(HCOO)(6) membrane is investigated by in situ IR spectroscopy. It is shown that the isosteric heats of adsorption for CO(2) (17.7 kJ mol(-1)) and CH(4) (14.4 kJ mol(-1)) do not vary with increasing amount of adsorbed gases. The higher value of isosteric heat for CO(2) is an indication of the stronger interaction between the CO(2) and the Co(3)(HCOO)(6) membrane. The Co(3)(HCOO)(6) membrane is studied by binary gas permeation of CO(2) and CH(4) at different temperatures (0, 25, and 60 °C). The membrane has CO(2)/CH(4) selectivity with a separation factor higher than 10, which is due to the unique structure and molecular sieving effect. Upon increasing the temperature from 0 to 60 °C, the preferred permeance of CO(2) over CH(4) is increased from 1.70×10(-6) to 2.09×10(-6) mol m(-2) s(-1) Pa(-1), while the separation factor for CO(2)/CH(4) shows a corresponding decrease from 15.95 to 10.37. The effective pore size of the Co(3)(HCOO)(6) material combined with the pore shape do not allow the two molecules to pass simultaneously, and once the CO(2) molecules are diffused in the micropores, the CH(4) is blocked. The supported Co(3)(HCOO)(6) membrane retains high mechanical stability after a number of thermal cycles.

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“…In the range of temperature (30 -180 o C) and pressure difference (100 -500 kPa) studied in current study, CO 2 displayed higher single gas fluxes even though CO 2 possess higher molecular weight than N 2 . The gas flux is the sum of micropore diffusion and surface diffusion [27]. It was relatively easier for CO 2 diffusion through the micropore Permeate Feed gas…”

Section: Materials and Methods Ba-sapo-34 Membrane Preparationmentioning

confidence: 99%

Ba-SAPO-34 ZEOLITE MEMBRANE FOR CO2 AND N2 PERMEATION

Chew¹

2016

MJAS

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Membrane separation technology is gaining importance nowadays in reducing the emission of carbon dioxide (CO 2 ) as greenhouse gas due to the global climate change. Gas permeation studies play significant role in reflecting the potential of the membranes in separating the gas mixtures. In this study, Ba-SAPO-34 zeolite membrane was formed by membrane synthesis process using microwave (MW) heating and followed by membrane ion-exchange process with Ba 2+ cation. The Ba-SAPO-34 zeolite membrane was investigated for its performance in the CO 2 and N 2 gases permeation studies. The effects of permeation temperature (30 -180 o C) and pressure difference (100 -500 kPa) across the membrane on the gas permeation performance of the Ba-SAPO-34 membrane were studied. Keywords: Ba-SAPO-34, membrane, gas permeation Abstrak Teknologi membran pemisahan adalah semakin penting pada masa kini dalam mengurangkan pelepasan karbon dioksida (CO 2 ) sebagai gas rumah hijau disebabkan oleh perubahan iklim sejagat. Kajian resapan gas memainkan peranan yang penting dalam mencerminkan potensi membran dalam pemisahan campuran gas. Dalam kajian ini, membrane zeolit Ba-SAPO-34 telah dibentuk melalui proses sintesis membran dengan menggunakan pemanasan gelombang mikro dan diikuti oleh proses pertukaran ion membran dengan kation Ba -8 mol/m 2 .s.Pa telah diperolehi bagi resapan gas melalui membran Ba-SAPO-34 di bawah julat suhu resapan dan perbezaan tekanan merentasi membran yang dikaji. Kememilihan CO 2 /N 2 sebanyak 29.6 (maksimum) telah diperolehi bagi resapan gas melalui membran Ba-SAPO-34 pada 30 o C dan perbezaaan suhu sebanyak 100 kPa.

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Temperature and pressure effects on CO2 and CH4 permeation through MFI zeolite membranes

Cited by 165 publications

References 28 publications

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

Co₃(HCOO)₆ Microporous Metal–Organic Framework Membrane for Separation of CO₂/CH₄ Mixtures

Ba-SAPO-34 ZEOLITE MEMBRANE FOR CO2 AND N2 PERMEATION

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Temperature and pressure effects on CO2 and CH4 permeation through MFI zeolite membranes

Cited by 165 publications

References 28 publications

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

Co3(HCOO)6 Microporous Metal–Organic Framework Membrane for Separation of CO2/CH4 Mixtures

Ba-SAPO-34 ZEOLITE MEMBRANE FOR CO2 AND N2 PERMEATION

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Co₃(HCOO)₆ Microporous Metal–Organic Framework Membrane for Separation of CO₂/CH₄ Mixtures