Ethylene/propylene separation using mixed matrix membranes of poly (ether block amide)/nano-zeolite (NaY or NaA)

Zhang, Xi; Yan, Mengyu; Feng, Xinbin; Wang, Xiaodong; Huang, Wei

doi:10.1007/s11814-020-0712-1

Cited by 4 publications

(4 citation statements)

References 54 publications

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“…Nanozeolites were dispersed in Pebax ® 2533 for light olefin separation (propylene/ethylene), comparing large pore NaY to small pore NaA zeolites [16]. In agreement with pure gas adsorption, the NaY zeolite was more effective in improving the separation.…”

Section: Olefin/paraffin Separationmentioning

confidence: 83%

“…Table 2 summarizes the fillers dispersed into the MMMs for different separations with the adopted loading range, while Table 3 reports the filler types employed for applications not strictly related to separations on the molecular scale. [11] 2533 on a polysulfone (PSf) support AgBF 4 /Al(NO 3 ) 3 (1/0.1 mol/mol) 9.7 (AgBF 4 ) Propylene/propane [12] 1657 on a PSf support AgBF 4 /Al(NO 3 ) 3 (1/0.1 mol/mol) 17 (AgBF 4 ) Propylene/propane [13] 1657 on a PSf support Silver nanoparticle/7,7,8,8tetracyanoquinodimethane (AgNPs/TCNQ) 87 Propylene/propane [14] 5513 on a PSf support AgBF 4 /[BMIM][BF 4 ] 10 (AgBF 4 ) Propylene/propane [15] 2533 nano-zeolite (NaY or NaA) 3-10 Ethylene/propylene [16] 1657 Ionic Liquids (ILs) 20-60…”

Section: Filler Categoriesmentioning

confidence: 99%

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Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

Clarizia

Bernardo

2022

Membranes

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The cornerstones of sustainable development require the treatment of wastes or contaminated streams allowing the separation and recycling of useful substances by a more rational use of energy sources. Separation technologies play a prominent role, especially when conducted by inherently environmentally friendly systems such as membrane operations. However, high-performance materials are more and more needed to improve the separative performance of polymeric materials nanocomposites are ideally suited to develop advanced membranes by combining organic polymers with suitable fillers having superior properties. In this area, polyether block amide copolymers (Pebax) are increasingly adopted as host matrices due to their distinctive properties in terms of being lightweight and easy to process, having good resistance to most chemicals, flexibility and high strength. In this light, the present review seeks to provide a comprehensive examination of the progress in the development of Pebax-based nanocomposite films for their application in several sensitive fields, that are challenging and at the same time attractive, including olefin/paraffin separation, pervaporation, water treatment, flexible films for electronics, electromagnetic shielding, antimicrobial surfaces, wound dressing and self-venting packaging. It covers a wide range of materials used as fillers and analyzes the properties of the derived nanocomposites and their performance. The general principles from the choice of the material to the approaches for the heterogeneous phase compatibilization as well as for the performance improvement were also surveyed. From a detailed analysis of the current studies, the most effective strategies to overcome some intrinsic limitations of these nanocomposites are highlighted, providing guidelines for the correlated research.

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Section: Olefin/paraffin Separationmentioning

confidence: 83%

Section: Filler Categoriesmentioning

confidence: 99%

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

Clarizia

Bernardo

2022

Membranes

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“…Nowadays, the separation of C 2 H 4 and C 3 H 6 is commonly accomplished by cryogenic distillation, which is a mature but energy-intensive process. Many works have been reported to develop new materials and technologies to efficiently separate C 2 H 4 and C 3 H 6 [5][6][7][8][9]. Adsorptive separation of C 2 H 4 and C 3 H 6 with porous materials is regarded as a promising alternative [10].…”

Section: Introductionmentioning

confidence: 99%

Efficient Propylene/Ethylene Separation in Highly Porous Metal–Organic Frameworks

Liu

Xie

2022

Materials

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Light olefins are important raw materials in the petrochemical industry for the production of many chemical products. In the past few years, remarkable progress has been made in the synthesis of light olefins (C2–C4) from methanol or syngas. The separation of light olefins by porous materials is, therefore, an intriguing research topic. In this work, single-component ethylene (C2H4) and propylene (C3H6) gas adsorption and binary C3H6/C2H4 (1:9) gas breakthrough experiments have been performed for three highly porous isostructural metal–organic frameworks (MOFs) denoted as Fe2M-L (M = Mn2+, Co2+, or Ni2+), three representative MOFs, namely ZIF-8 (also known as MAF-4), MIL-101(Cr), and HKUST-1, as well as an activated carbon (activated coconut charcoal, SUPELCO©). Single-component gas adsorption studies reveal that Fe2M-L, HKUST-1, and activated carbon show much higher C3H6 adsorption capacities than MIL-101(Cr) and ZIF-8, HKUST-1 and activated carbon have relatively high C3H6/C2H4 adsorption selectivity, and the C2H4 and C3H6 adsorption heats of Fe2Mn-L, MIL-101(Cr), and ZIF-8 are relatively low. Binary gas breakthrough experiments indicate all the adsorbents selectively adsorb C3H6 from C3H6/C2H4 mixture to produce purified C2H4, and 842, 515, 504, 271, and 181 cm3 g−1 C2H4 could be obtained for each breakthrough tests for HKUST-1, activated carbon, Fe2Mn-L, MIL-101(Cr), and ZIF-8, respectively. It is worth noting that C3H6 and C2H4 desorption dynamics of Fe2Mn-L are clearly faster than that of HKUST-1 or activated carbon, suggesting that Fe2M-L are promising adsorbents for C3H6/C2H4 separation with low energy penalty in regeneration.

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“…To our knowledge, the preparation of dense and continuous zeolites-polymer hybrid membranes is simpler and more controllable than inorganic zeolites membranes, which providing a new possible strategy for DCB separation. To date, many zeolites-polymer hybrid membranes such as MFI−type zeolites/polydimethylsiloxane (PDMS) hybrid membranes [38][39][40][41], CHA−type zeolites/polytrimethylsilyl−1−propyne (PTMSP) hybrid membranes [42,43], FAU−type zeolites/poly (ether block amide) (PEBA) hybrid membranes [44][45][46][47], and LTA−type zeolites/polyvinyl alcohol (PVA) hybrid membranes have been successfully prepared [48][49][50]. Among the above zeolites-polymer hybrid membranes, MFI-type zeolites/PDMS hybrid membranes are widely used in gas and liquid separation because of the stable structure, excellent corrosion resistance and easy film−forming properties [38,[51][52][53][54][55].…”

Section: Introductionmentioning

confidence: 99%

Silicalite-1/PDMS Hybrid Membranes on Porous PVDF Supports: Preparation, Structure and Pervaporation Separation of Dichlorobenzene Isomers

Chen

Wang

et al. 2022

Polymers

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Separation of dichlorobenzene (DCB) isomers with high purity by time− and energy−saving methods from their mixtures is still a great challenge in the fine chemical industry. Herein, silicalite-1 zeolites/polydimethylsiloxane (PDMS) hybrid membranes (silicalite-1/PDMS) have been successfully fabricated on the porous polyvinylidene fluoride (PVDF) supports to first investigate the pervaporation separation properties of DCB isomers. The morphology and structure of the silicalite-1 zeolites and the silicalite-1/PDMS/PVDF hybrid membranes were characterized by XRD, FTIR, SEM and BET. The results showed that the active silicalite-1/PDMS layers were dense and continuous without any longitudinal cracks and other defects with the silicalite-1 zeolites content no more than 10%. When the silicalite-1 zeolites content exceeded 10%, the surfaces of the active silicalite-1/PDMS layers became rougher, and silicalite-1 zeolites aggregated to form pile pores. The pervaporation experiments both in single-isomer and binary−isomer systems for the separation of DCB isomers was further carried out at 60 °C. The results showed that the silicalite-1/PDMS/PVDF hybrid membranes with 10% silicalite-1 zeolites content had better DCB selective separation performance than the silicalite-1/α−Al2O3 membranes prepared by template method. The permeate fluxes of the DCB isomers increased in the order of m−DCB < o−DCB < p−DCB both in single-isomer and binary-isomers solutions for the silicalite-1/PDMS/PVDF hybrid membranes. The separation factor of the silicalite-1/PDMS/PVDF hybrid membranes for p/o−DCB was 2.9 and for p/m−DCB was 4.6 in binary system. The permeate fluxes of the silicalite-1/PDMS/PVDF hybrid membranes for p−DCB in p/o−DCB and p/m−DCB binary−isomers solutions were 126.2 g∙m−2∙h−1 and 104.3 g∙m−2∙h−1, respectively. The thickness−normalized pervaporation separation index in p/o−DCB binary−isomers solutions was 4.20 μm∙kg∙m−2∙h−1 and in p/m−DCB binary−isomers solutions was 6.57 μm∙kg∙m−2∙h−1. The results demonstrated that the silicalite-1/PDMS/PVDF hybrid membranes had great potential for pervaporation separation of DCB from their mixtures.

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Ethylene/propylene separation using mixed matrix membranes of poly (ether block amide)/nano-zeolite (NaY or NaA)

Cited by 4 publications

References 54 publications

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

Efficient Propylene/Ethylene Separation in Highly Porous Metal–Organic Frameworks

Silicalite-1/PDMS Hybrid Membranes on Porous PVDF Supports: Preparation, Structure and Pervaporation Separation of Dichlorobenzene Isomers

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