Preparation of Carbon Molecular Sieve Membrane and Diffusion of Binary Mixtures in the Membrane

Chen, Y. D.; Yang, Ruoyu

doi:10.1021/ie00036a033

Cited by 142 publications

(56 citation statements)

References 20 publications

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“…Recently, with the development of carbon molecular sieves, interest in this type of microporous membrane has been renewed. Chen and Yang (1994) developed a carbon molecular sieve membrane on a macroporous graphite support by controlled pyrolysis. A carbon molecular sieve layer of 15-pm thickness was obtained; the support thickness is 0.457 cm.…”

Section: Microporous Membranesmentioning

confidence: 99%

Temperature dependence of one‐component permeation through a silicalite‐1 membrane

Bakker¹,

Broeke²,

Kapteijn³

et al. 1997

AIChE Journal

280

174

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Section: Microporous Membranesmentioning

confidence: 99%

Temperature dependence of one‐component permeation through a silicalite‐1 membrane

Bakker¹,

Broeke²,

Kapteijn³

et al. 1997

AIChE Journal

280

174

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show abstract

“…It can achieve higher selectivity without loosing the productivity [2][3][4][5][6][7][8][9] and thus surpass the upper bound limit of polymeric membranes. CMSMs have also been recognized with advantages of higher thermal and chemical stability [2,[9][10][11][12][13]. This makes CMSMs suitable for corrosive, high pressure and high temperature operation, which is attractive for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Novel approaches to fabricate carbon molecular sieve membranes based on chemical modified and solvent treated polyimides

Tin

Chung

Kawi

et al. 2004

Microporous and Mesoporous Materials

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Novel approaches to fabricate carbon molecular sieve membranes based on chemical modified and solvent treated polyimides Tin, P.; Chung, T-S.; Kawi, S.; Guiver, Michael AbstractTwo brand-new modification technologies were developed for pyrolyzing the carbon molecular sieve membranes (CMSMs) with excellent separation efficiency. The modifications were performed on polymeric precursors. It is believed that the space filling effect by these modifications could considerably alter the separation performance of resultant carbon membranes. Firstly, a cross-linking modification was performed on polymeric precursors at room temperature before pyrolysis. The effectiveness of chemical crosslinking technology in improving gas separation capability of CMSMs was investigated. In this study, the permeation properties of carbon membranes derived from cross-linked Matrimid were characterized as a function of cross-linking density. Results demonstrated that the permeability of modified CMSMs decreased with increasing in cross-linking density. Detailed examination reveals that cross-linking modification increased the selectivity at a low degree of cross-linking but reduced the selectivity at a higher degree of cross-linking. The improvement of separation efficiency at low degree of cross-linking is presumably related to the swelling of polymer chains by methanol during cross-linking modification. Consequently, the second extremely simple modification method by using pure methanol immersion was developed. It was found that the CMSMs derived from methanol-treated precursors exhibited superior transport properties. Methanol treatment yielded CMSMs with higher selectivities if compared to CMSMs based on untreated and cross-linked Matrimid. Therefore, it can be concluded that the swelling of polymer chains by methanol appears to be an effectual modification method to produce the CMSMs with excellent separation properties.

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“…Previously, molecular simulations were used for studying SC fluids in the bulk (Shing and Chung, 1987;Nouacer and Shing, 1989;Cummings et al, 1991;Chung and Shing, 1992; Eckert et al, 1996;Martinez et al, 1996; Yoshii and Okazaki, 1997; for a review see Chialvo and Cummings, 1999), very few such studies were devoted to investigating the behavior of SC fluids in small pores (Nicholson, 1998). They were mostly based on the MC method (Nitta and Yoneya, 1995; Shigeta et al, 1996).…”

Section: Molecular Dynamics Simulationmentioning

confidence: 99%

“…In this paper we present the results of MD simulation of transport of binary mixtures of CO 2 and CH 4 , C 2 H 6 , C 3 H 8 , and C 4 H 10 under such conditions. To our knowledge, such a study has never been carried out before.Due to their stability and versatility, carbon molecular-sieve (CMS) membranes have been used by many groups (Koresh and Sofer, 1983; Sircar, 1993, 1996;Jones and Koros, 1994Chen and Yang, 1994;Linkov et al, 1994;Afrane and Chimowitz, 1996;Sircar et al, 1996; Shusen et al, 1996;Acharya et al, 1997;Petersen et al, 1997; Steriotis et al, 1997;, as well as our own group , in studies of separation of subcritical fluid mixtures. Such membranes are prepared with well-controlled porosity and a narrow pore size distribution.…”

mentioning

confidence: 99%

Final Report for Project Titled Nanoporous Materials: Experimental Studies and Molecular Simulations

Tsotsis¹

2008

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Preparation of Carbon Molecular Sieve Membrane and Diffusion of Binary Mixtures in the Membrane

Cited by 142 publications

References 20 publications

Temperature dependence of one‐component permeation through a silicalite‐1 membrane

Temperature dependence of one‐component permeation through a silicalite‐1 membrane

Novel approaches to fabricate carbon molecular sieve membranes based on chemical modified and solvent treated polyimides

Final Report for Project Titled Nanoporous Materials: Experimental Studies and Molecular Simulations

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