Natural gas purification and olefin/paraffin separation using thermal cross-linkable co-polyimide/ZIF-8 mixed matrix membranes

Askari, Mohammad; Chung, Tai‐Shung

doi:10.1016/j.memsci.2013.05.016

Cited by 251 publications

(140 citation statements)

References 61 publications

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“…Many studies can be found in the open literature on the use of this material for the preparation of membranes to be used in gas separation applications. Most of the studies are also focalized on the improvement of the separation properties of these membranes by the addition of fillers (Askari and Chung, 2013;Nik et al, 2012) or blends (Madaeni et al, 2012) or by introducing new preparation techniques and post-treatments (Nisola et al, 2011;Wang et al, 2013) which also give improvements in terms of durability and resistance. In the meantime, there have been many patents developed up to now on the preparation of these membranes for various purposes in the field of gas separation and various aspects of their application have been investigated (Nagata, 1997;Liu et al, 2012;Chung et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Falbo

Tasselli

Brunetti

et al. 2014

Braz. J. Chem. Eng.

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-Matrimid®5218 hollow fiber membranes were prepared using the dry-wet spinning process. The transport properties were measured with pure gases (H 2 , CO 2 , N 2 , CH 4 and O 2 ) and with a mixture (30% CO 2 and 70% N 2 ) in dry and wet conditions at 25 °C, 50 °C, 60 °C and 75 °C and up to 600 kPa. Interesting values of single gas selectivity up to 60 °C (between 31 and 28 for CO 2 /N 2 and between 33 and 30 for CO 2 /CH 4 ) in dry condition were obtained. The separation factor measured for the mixture was 20% lower compared to the single gas selectivity, in the whole temperature range analyzed. In saturation conditions the data showed that water influences the performance of the membranes, inducing a reduction of the permeance of all gases. Moreover, the presence of water caused a decrease of single gas selectivity and separation factor, although not so significant, highlighting the very high water resistance of hollow fiber membrane modules.

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Section: Introductionmentioning

confidence: 99%

Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Falbo

Tasselli

Brunetti

et al. 2014

Braz. J. Chem. Eng.

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“…[16][17][18] This concept has been applied to ZIF-8-based MMMs for a variety of gas separation applications, [20][21][22] including propylene/propane separation. 23,24 The most important challenges in the formation of advanced mixed-matrix membranes are: (i) elimination of interfacial defects that arise from poor compatibility between the polymer matrix and the highly selective ultramicroporous filler and (ii) limitations in the maximum filler loading for MMMs with sufficiently high mechanical strength. 25 A recent study demonstrated that ZIF-8 nanoparticles coated with polydopamine (PD) enhanced their compatability with a Tröger's base derived polyimide matrix due to interactions by hydrogen bonding of the orthodihydroxyl groups in the PD and the nitrogen of the imidazole in ZIF-8.…”

Section: Introductionmentioning

confidence: 99%

Highly Compatible Hydroxyl-Functionalized Microporous Polyimide-ZIF-8 Mixed Matrix Membranes for Energy Efficient Propylene/Propane Separation

Ma¹,

Swaidan

Wang³

et al. 2018

ACS Appl. Nano Mater.

101

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Mixed-matrix membranes composed of mechanically strong, solution-processable polymers and highly selective ultramicroporous fillers (pore size < 7 Å) are superior candidate membrane materials for a variety of energy-intensive gas separation applications because of their structural tunability to achieve enhanced gas permeability and gas-pair selectivity. However, their industrial implementation has been severely hindered because inefficient compatibility of the polymer matrices and crystalline fillers results in poorly performing membranes with low filler capacity and interfacial defects. Herein, we report for the first time a unique strategy to fabricate highly propylene/propane selective mixed-matrix membranes (MMMs) composed of a hydroxyl-functionalized microporous polyimide (PIM-6FDA-OH) and an ultramicroporous, strongly size-sieving zeolitic imidazolate framework (ZIF-8). Excellent compatibility between PIM-6FDA-OH and ZIF-8 with selective filler loading up to 65 wt% resulted from N…O-H induced hydrogen bonding as evidenced by Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The newly developed MMMs demonstrated unprecedented mixed-gas performance for C 3 H 6 /C 3 H 8 separation and outstanding plasticization resistance of up to at least 7 bar feed pressure. The reported fabrication concept is expected to be applicable to a wide variety of OH functionalized polymers and alternative tailor-made imidazolate framework materials designed for MMMs to achieve optimal gas separation performance.

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“…Also, introducing a cross-linkable polymer (e.g. copolyimides) and solidifying it after the cast of MMMs [35,36] or surface cross-linking the MMMs with a cross-linking agent provides more flexibility to facilitate the filler dispersion and adhesion [37]. One-pot synthesis can also be effective in dispersing nano-fillers and restraining agglomeration [38].…”

Section: Introductionmentioning

confidence: 99%

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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Natural gas purification and olefin/paraffin separation using thermal cross-linkable co-polyimide/ZIF-8 mixed matrix membranes

Cited by 251 publications

References 61 publications

Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Highly Compatible Hydroxyl-Functionalized Microporous Polyimide-ZIF-8 Mixed Matrix Membranes for Energy Efficient Propylene/Propane Separation

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

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