Nanocomposite MFI-alumina hollow fibre membranes prepared via pore-plugging synthesis: Influence of the porous structure of hollow fibres on the gas/vapour separation performance

Deng, Zheng; Nicolas, Henri; Daramola, Michael O.; Sublet, J.; Schiestel, Thomas; Burger, Andries J.; Guo, Yaohao; Giroir‐Fendler, A.; Pera‐Titus, Marc

doi:10.1016/j.memsci.2010.05.065

Cited by 22 publications

(18 citation statements)

References 30 publications

(38 reference statements)

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“…The energies of interaction between the molecule and the membrane will also provide an estimate of the ease of adsorption of each component on the membrane [47,48,49,50,51,52]. Understanding this mechanism has been demonstrated for membrane separation of xylene isomers and CO 2 /N 2 using silicalite-1 membranes [53,54,55,56]. Extensive studies of adsorption and diffusion of hydrocarbon on silicalite-1 membrane have been reported by Krishna and coworkers [44,57,58,59,60,61].…”

Section: Introductionmentioning

confidence: 99%

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

2012

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Future production of chemicals (e.g., fine and specialty chemicals) in industry is faced with the challenge of limited material and energy resources. However, process intensification might play a significant role in alleviating this problem. A vision of process intensification through multifunctional reactors has stimulated research on membrane-based reactive separation processes, in which membrane separation and catalytic reaction occur simultaneously in one unit. These processes are rather attractive applications because they are potentially compact, less capital intensive, and have lower processing costs than traditional processes. Therefore this review discusses the progress and potential applications that have occurred in the field of zeolite membrane reactors during the last few years. The aim of this article is to update researchers in the field of process intensification and also provoke their thoughts on further research efforts to explore and exploit the potential applications of zeolite membrane reactors in industry. Further evaluation of this technology for industrial acceptability is essential in this regard. Therefore, studies such as techno-economical feasibility, optimization and scale-up are of the utmost importance.

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Section: Introductionmentioning

confidence: 99%

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

2012

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“…However, because of lower penetration of the precursor solution within the pores following the initial nucleation step, the formation of the final zeolite active layer may actually be inhibited due to the smaller pore size. Conversely, larger pore sizes may result in a more consistent composite membrane structure up to a certain pore size, at which point zeolite crystal growth may not be sufficient to completely fill the pores, leading to an increased presence of defects . Previous studies have shown that the formation of the silicalite‐1 zeolite crystal size and orientation is highly dependent on the synthesis parameters such as: temperature, solution concentration, and length of the synthesis time .…”

Section: Resultsmentioning

confidence: 99%

Pore plugging synthesis and characterization of silicalite‐1 membranes using tubular TiO₂ supports: Effect of support pore size on membrane performance

et al. 2018

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In this study, we present a detailed synthesis procedure and characterization of porous inorganic silicalite‐1 membranes. The membranes were synthesized in‐situ using a pore plugging method with the inclusion of a 12 h thermal break promoting secondary growth within the active layer pores of the tubular TiO2 supports. The effect of the support pore size on membrane performance was examined with pore sizes ranging from 0.3 μm to 1.4 μm. Characterization using SEM and EDS analysis confirm the penetration and formation of silicalite‐1 crystals within porous supports up to a depth of 10–12 µm for all membranes. With the exception of the membranes synthesized on the support with 1.4 μm pore size, all membranes were more permeable to probe gas N2 compared to He. The highest ideal N2/He selectivity of 2.3 ± 0.5 was observed for the membranes synthesized on supports with 0.8 μm pore size. Single gas permeance for the membranes was high, ranging between 3.7 × 10−7 and 1.3 × 10−5 mol/m2sPa, and was independent of gas kinematic diameter with the order of permeation being CH4 > CO2 > N2 > He. Binary equimolar CO2/N2 separation experiments show better membrane CO2/N2 permselectivity compared to the ideal selectivity calculated from the single gas experiments. Comparing the observed membrane gas diffusivity and the adsorbate gas uptake rate within the zeolite material alone shows that these favourable selective properties are the result of adsorption surface diffusion and that Knudsen diffusion is minimized.

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“…[1,3,21] In most cases, the seeding methods employed result in non-uniform seed distribution on the surface of the supports, thereby promoting formation of cracks/defects in the membranes. [1,3] In a study by Deng and his coworkers, [28] PPH was explored to produce nanocomposite MFI membranes in which zeolite crystals were grown in the pores of α-alumina hollow fibre support. In this study, the authors reported a CO 2 permeance of 10.6 × 10 À7 mol m À2 s À1 Pa À1 and a CO 2 /N 2 selectivity of 6.…”

Section: Co 2 /N 2 Separation Performance Testmentioning

confidence: 99%

“…In this study, the authors reported a CO 2 permeance of 10.6 × 10 À7 mol m À2 s À1 Pa À1 and a CO 2 /N 2 selectivity of 6. However, at high temperatures, [28] K. KGAPHOLA, I. SIGALAS AND M. O. DARAMOLA Asia-Pacific Journal of Chemical Engineering 902 the CO 2 permeation through the membrane increased significantly, thereby resulting in a dramatic reduction in membrane selectivity. The hollow fibre configuration was used to enhance the surface area to volume ratio of the membrane.…”

Section: Co 2 /N 2 Separation Performance Testmentioning

confidence: 99%

Synthesis and characterization of nanocomposite SAPO‐34/ceramic membrane for post‐combustion CO₂ capture

Kgaphola

Sigalas

Daramola

2017

Asia-Pacific J Chem Eng

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Thin‐film SAPO‐34 membranes can separate CO2 efficiently. However, crack formation due to thermal expansion mismatch between the SAPO‐34 crystals and the support occurs at high operating temperatures, thereby resulting in a dramatic loss. Nanocomposite architecture SAPO‐34 membranes prepared via pore‐plugging hydrothermal synthesis could overcome this problem. In this study, nanocomposite SAPO‐34 membranes were synthesized via pore‐plugging hydrothermal and evaluated for N2/CO2 separation. Physico‐chemical property of the as‐synthesized membranes was checked with X‐ray diffraction, scanning electron microscope, thermal gravimetric analyser, and Fourier transform infrared. The X‐ray diffraction pattern reveals characteristic peaks associated with the rhombohedral crystal type of SAPO‐34; thermal gravimetric analyser shows a high thermal stability, Fourier transform infrared spectra indicate the presence of the D6R and T–O vibrations which form an essential part of the SAPO‐34 structure, and scanning electron microscope images of the membranes reveal cubic morphology of the SAPO‐34 crystals embedded in the ceramic support. Single gas permeation experiments using pure component of CO2 and N2 conducted to evaluate the separation performance of the membranes during post‐combustion CO2 capture reveal that ideal selectivity increased significantly for multistage pore‐plugging hydrothermal synthesis. The Maxwell–Stefan model describes adequately the CO2 permeation behaviour through the membrane as well. However, the membrane flux reduced owing to increase in membrane thickness. © 2017 Curtin University and John Wiley & Sons, Ltd.

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Nanocomposite MFI-alumina hollow fibre membranes prepared via pore-plugging synthesis: Influence of the porous structure of hollow fibres on the gas/vapour separation performance

Cited by 22 publications

References 30 publications

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Pore plugging synthesis and characterization of silicalite‐1 membranes using tubular TiO₂ supports: Effect of support pore size on membrane performance

Synthesis and characterization of nanocomposite SAPO‐34/ceramic membrane for post‐combustion CO₂ capture

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Nanocomposite MFI-alumina hollow fibre membranes prepared via pore-plugging synthesis: Influence of the porous structure of hollow fibres on the gas/vapour separation performance

Cited by 22 publications

References 30 publications

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Potential Applications of Zeolite Membranes in Reaction Coupling Separation Processes

Pore plugging synthesis and characterization of silicalite‐1 membranes using tubular TiO2 supports: Effect of support pore size on membrane performance

Synthesis and characterization of nanocomposite SAPO‐34/ceramic membrane for post‐combustion CO2 capture

Contact Info

Product

Resources

About

Pore plugging synthesis and characterization of silicalite‐1 membranes using tubular TiO₂ supports: Effect of support pore size on membrane performance

Synthesis and characterization of nanocomposite SAPO‐34/ceramic membrane for post‐combustion CO₂ capture