Non-ideal effects in organic–inorganic materials for gas separation membranes

Moore, Theodore T.; Koros, William J.

doi:10.1016/j.molstruc.2004.05.043

Cited by 590 publications

(519 citation statements)

References 39 publications

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“…99 Mixed matrix membranes combining polymers with zeolites have long been studied extensively aiming at low-cost, highperformance membranes. [100][101][102][103][104][105][106][107][108] (see also Section 13). However, the inherent incompatibility between zeolites and polymers still remains a limitation, while performance of these membranes has remained low to modest at best.…”

Section: Polymer Supported Membranesmentioning

confidence: 99%

Zeolite membranes – a review and comparison with MOFs

et al. 2015

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aThe latest developments in zeolite membranes are reviewed, with an emphasis on the synthesis techniques, including seed assembly and secondary growth methods. This review also discusses the current industrial applications of zeolite membranes, the feasibility of their use in membrane reactors and their hydrothermal stability. Finally, zeolite membranes are compared with metal-organic framework (MOF) membranes and the latest advancements in MOF and mixed matrix membranes are highlighted.

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Section: Polymer Supported Membranesmentioning

confidence: 99%

Zeolite membranes – a review and comparison with MOFs

et al. 2015

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“…Therefore, additional void volume besides fractional free volume exists in the microporous PIM-1 polymer matrices. Consequently, the size of the aggregates plays a key role in the gas permeation properties due to the formation of void space in the nanocomposites [34].…”

Section: Microporous Morphologymentioning

confidence: 99%

Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1)

Ahn

Chung

Pinnau

et al. 2010

Journal of Membrane Science

254

189

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Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1) Ahn, Juhyeon; Chung, Wook-Jin; Pinnau, Ingo; Song, Jingshe; Du, Naiying; Robertson, Gilles P.; Guiver, Michael D.This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Recently, high-free volume, glassy ladder-type polymers, referred to as polymers of intrinsic microporosity (PIM), have been developed and their reported gas transport performance exceeded the Robeson upper bound trade-off for O 2 /N 2 and CO 2 /CH 4 . The present work reports the gas transport behavior of PIM-1/silica nanocomposite membranes. The changes in free volume, as well as the presence and volume of the void cavities, were investigated by analyzing the density, thermal stability, and nano-structural morphology. The enhancement in gas permeability (e.g., He, H 2 ,O 2 ,N 2 , and CO 2 ) with increasing filler content shows that the trend is related to the true silica volume and void volume fraction. Crown

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“…In addition, similar to carbon nanotubes, the tubular structure of natural HNTs may provide smooth diffusion channels for fast gas transportation. On the other hand, literature also showed that the polymer rigidifies near the porous filler surface during formation of mixed matrix membranes [47]. As indicated in Fig.…”

Section: Characterization Of Mixed Matrix Membranesmentioning

confidence: 93%

Surface-etched halloysite nanotubes in mixed matrix membranes for efficient gas separation

Lin

Wang

et al. 2017

Separation and Purification Technology

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, Surfaceetched halloysite nanotubes in mixed matrix membranes for efficient gas separation, Separation and Purification Technology (2016), doi: http://dx.doi.org/10.1016/j.seppur. 2016.09.015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractPossessing the advantages of both polymeric membranes and the specific inorganic nanoparticles or nanotubes, mixed matrix membranes (MMMs) have captured the imagination of researchers for a possible technological breakthrough for efficient gas separation. However, it is still very challenging to achieve defect-free interface between fillers and polymer matrix. In this study, the naturally abundant and low cost halloysite nanotubes (HNTs) were applied as fillers for MMMs synthesis. To improve the filler dispersion and filler-matrix interface affinity, the raw HNTs were modified by either alkali etching or (3-Aminopropyl) triethoxysilane grafting. After surface etching, the defect holes were formed on the surfaces of etched-HNTs, resulting in the rougher HNT walls and significant increment of surface area and CO 2 adsorption capacity.

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Non-ideal effects in organic–inorganic materials for gas separation membranes

Cited by 590 publications

References 39 publications

Zeolite membranes – a review and comparison with MOFs

Zeolite membranes – a review and comparison with MOFs

Gas transport behavior of mixed-matrix membranes composed of silica nanoparticles in a polymer of intrinsic microporosity (PIM-1)

Surface-etched halloysite nanotubes in mixed matrix membranes for efficient gas separation

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