Optimal synthesis of nanosize seeds for secondary growth of high performance hydroxy-sodalite (H-SOD) zeolite membranes for small gas and water separations

Arepalli, Devipriyanka; Rehman, Aafaq ur; Kim, Min-Zy; Alam, Syed Fakhar; Cho, Churl-Hee

doi:10.1016/j.micromeso.2021.111451

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…Following synthesis at different conditions, kaolin transformed to sodalite based on the diffraction peaks at 2θ = 14.079, 24.419, 31.640, 34.720, and 42.839°, corresponding to the (110), ( 211), (310), (222), and (330) crystal planes, respectively, in accordance with JCPDS No. 75-0709 [21,32]. Calculation of the crystallinity of sodalite from XRD data showed that the S60H6 sample had the highest crystallinity at 109%, while the S60H3 sample had the lowest crystallinity at 40% (Table 2).…”

Section: Characterization Catalystmentioning

confidence: 98%

“…Following synthesis at different conditions, kaolin transformed to sodalite based on the diffraction peaks at 2θ = 14.079, 24.419, 31.640, 34.720, and 42.839 • , corresponding to the (110), ( 211), (310), (222), and (330) crystal planes, respectively, in accordance with JCPDS No. 75-0709 [21,32].…”

Section: Characterization Catalystmentioning

confidence: 99%

“…Such properties show the great potential of sodalite as an adsorbent for heavy metals. Sodalite preparation methods include hydrothermal [18], microwave [19], alkali fusion [20], and the templating route [21]. Sodalite can be synthesized using naturally abundant minerals such as kaolin [22], coal fly ash [23], and rice husk ash [24], not only to enhance the potential of minerals but also to reduce the cost of production.…”

Section: Introductionmentioning

confidence: 99%

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Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

et al. 2022

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Mesoporous sodalite nanoparticles were directly synthesized from Indonesian kaolin with the addition of CTABr as a mesopore template. The studies highlighted the importance of aging time (3–12 h) and temperature (50–80 °C) on increasing surface area and mesoporosity of sodalite. Indonesian kaolin was used without pre-treatment and transformed to sodalite following the initial molar composition of 10 Na2O: 2 SiO2: Al2O3: 128 H2O. Characterization data revealed the formation of high surface area sodalite with mesoporosity at increasing aging temperatures and times. The presence of CTABr as templates produced sodalites nanoparticles with smaller aggregates than the non-template sodalite. The sodalite sample obtained at 80 °C of crystallization temperature for 9 h (S80H9) displayed the highest mesopore volume (0.07612 cm3/g) and the highest adsorption capacity of Pb2+ (212.24 mg/g). Pb2+ was suggested to adsorb via ion exchange with the Na+ counter cation and physical adsorption.

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Section: Characterization Catalystmentioning

confidence: 98%

Section: Characterization Catalystmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

et al. 2022

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“…Chen et al prepared MFI zeolite membranes on alumina hollow fibers using secondary growth and found that gas permeability of the membrane increased with the substrate curvature [30]. In addition, the secondary growth was applied to the synthesis of fluorine-free STT, Si-CHA and hydroxysodalite (H-SOD) zeolite membranes [31][32][33]. The traditional hydrothermal synthesis is conducted at high temperature and high pressure, causing high cost and energy consumption.…”

Section: Zeolite Membranesmentioning

confidence: 99%

Inorganic microporous membranes for hydrogen separation: Challenges and solutions

Shui

Hao

Wan

et al. 2022

Nano Research Energy

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Porous membrane separation is a competitive hydrogen purification technology due to the advantages of environmental friendliness, energy-saving, simple operation, and low cost. Benefiting from the booming development of materials science and chemical science, great progress has been made in H 2 separation with porous membranes. This review focuses on the latest advances in the design and fabrication of H 2 separation inorganic microporous membranes, with emphasis on the synthetic strategies to achieve structural integrity, continuity and stability. This review starts with a brief introduction to the membrane separation mechanisms, followed by an elaboration on the synthetic challenges and corresponding solutions of various high-performance inorganic microporous membranes based on zeolites, silica, carbon, and metal-organic frameworks (MOFs). At last, by highlighting the prospects of ultrathin two-dimensional (2D) porous membranes, we wish to shed some light on the further development of new materials and membranes for highly efficient hydrogen separation.

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Current Progress on Dual‐Layer Hollow Fiber Mixed‐Matrix Membrane in CO₂ Capture

Zeeshan,

Yeong,

Chew

2024

ChemBioEng Reviews

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Carbon dioxide (CO2) is a greenhouse gas which is mainly found in natural gas (NG), biogas, and flue gas. Anthropogenic CO2 emissions are the direct result of burning fossil fuels. Meanwhile, pre‐ and postcombustion CO2 separation is a current state of CO2 removal method in an extensive manner. From environmental, economic, and transportation perspectives, removal of CO2 has driven the development of its separation process technology. Among the reported technologies, membrane‐based gas separation technologies have grown substantially, breakthroughs and advances in past decades. This review paper aims to provide an overview on competitive gas separation processes, different types of membranes available, gas transport mechanisms, and fabrication process of hollow fiber membranes, particularly dual‐layer hollow fiber membrane. The performance of the membranes in CO2 separation and effect of spinning parameters on the formation of hollow fiber membranes are highlighted. In addition, approaches to improve the dual‐layer adhesion, strategies to enhance the filler compatibility in the development of dual‐layer hollow fiber mixed‐matrix membranes, and effect of post‐treatments on the gas separation performance of membrane are also discussed. Finally, challenges and future perspectives of dual‐layer hollow fiber mixed‐matrix membranes toward CO2 capture, particularly on CO2/CH4 and CO2/N2 separation, are also included, due to its substantial and direct relevance to the gas separation industry.

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Optimal synthesis of nanosize seeds for secondary growth of high performance hydroxy-sodalite (H-SOD) zeolite membranes for small gas and water separations

Cited by 8 publications

References 32 publications

Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

Inorganic microporous membranes for hydrogen separation: Challenges and solutions

Current Progress on Dual‐Layer Hollow Fiber Mixed‐Matrix Membrane in CO₂ Capture

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Optimal synthesis of nanosize seeds for secondary growth of high performance hydroxy-sodalite (H-SOD) zeolite membranes for small gas and water separations

Cited by 8 publications

References 32 publications

Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

Controlling the Size and Porosity of Sodalite Nanoparticles from Indonesian Kaolin for Pb2+ Removal

Inorganic microporous membranes for hydrogen separation: Challenges and solutions

Current Progress on Dual‐Layer Hollow Fiber Mixed‐Matrix Membrane in CO2 Capture

Contact Info

Product

Resources

About

Current Progress on Dual‐Layer Hollow Fiber Mixed‐Matrix Membrane in CO₂ Capture