Development of LTA zeolite membrane from clay by sonication assisted method at room temperature for H2-CO2 and CO2-CH4 separation

Sen, Mitali; Dana, Kausik; Das, Nandini

doi:10.1016/j.ultsonch.2018.06.007

Cited by 40 publications

(13 citation statements)

References 49 publications

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“…Sen et al developed a sonochemical method for green synthesis of zeolitic material for fabricating gas separation membranes. [ 100 ] Montmorillonite clay as a silica and alumina source was converted to zeolite powder by first preparing a sol by ultrasonication of clay suspension in NaOH. The sonicated mixture was then converted to zeolite powder by hydrothermal crystallization at 100°C.…”

Section: Synthesis Methods Of Porous Materialsmentioning

confidence: 99%

A comprehensive review on the synthesis techniques of porous materials for gas separation and catalysis

et al. 2022

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Intrinsic structural characteristics of porous materials have found significant applications in selective separation of gases and heterogeneous catalysis. While using porous materials for gas separation and catalysis, some of the challenging issues are the strength of catalytic sites, hydrothermal stability, crystalline order of solids, and selectivity. Researchers' ability to engineer the synthesis strategies rationally can help overcome technological challenges. In recent years, breakthroughs in porous materials are focused on developing different chemistries to control the pore architecture. This review focuses on recent advances made in synthesis strategies of porous materials and their impact on gas separation and catalysis applications. A significant part of this review is devoted to various synthesis methods, such as various types of templating methods, molecular layer deposition, sol-gel technique, and polymerization methods. Improvement in various catalytic reactions and gas separations due to different functionalization methods is also summarized. Lastly, we have discussed the applications of porous materials in the form of adsorbents and membranes in commercial processes. We hope that this review will serve as a quick reference for beginners who want to synthesize porous materials with control of pore structure.

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Section: Synthesis Methods Of Porous Materialsmentioning

confidence: 99%

A comprehensive review on the synthesis techniques of porous materials for gas separation and catalysis

et al. 2022

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“…The support tubes used for membrane development were first cut into 60 mm length and then cleaned with deionized water and acetone to remove associated dust and impurities (oily material). Then they were modified with a polymeric coating layer of poly-DADMAC on its inner surface . This surface modified support tube was then utilized for HAL membrane development purposes.…”

Section: Methodsmentioning

confidence: 99%

“…Then they were modified with a polymeric coating layer of poly-DADMAC on its inner surface. 28 treatment temperatures of 120 °C for 24 h in a hot air oven. The time of hydrothermal treatment was decided by checking the adherence of coating on the support tubes.…”

Section: Hal Clay Membrane (Hcm)mentioning

confidence: 99%

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Dutta

Das

2022

ACS Appl. Mater. Interfaces

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This study highlights the separation of hydrogen from H2–He mixture gas by a graphene-coated halloysite nanoclay membrane. The graphene-coated clay membrane along with its pure clay counterpart is successfully developed and studied for gas separation using hydrogen (H2)–helium (He) single and mixture gases. Hydrothermal and nonhydrothermal methods were applied for the synthesis of a ″coated″ membrane on a porous alumina substrate from the graphene and halloysite clay. To date, nanoporous zeolites are the potential materials for gas separation based on a molecular sieving mechanism. A similar separation mechanism for hydrogen and helium from mixture gases may not work efficaciously due to the closeness of their kinetic diameter (H2: 2.89 Å and He: 2.6 Å). The presence of defects and torn nanopores between graphene layers along with the different surface charges of the inner and outer layer of halloysite nanotubes facilitates the ″coated″ membrane to show an appreciable H2/He separation factor of ∼4 using H2–He (1:1) mixture gas compared to 2.86 for the pure halloysite membrane. The available charge layer of graphene also has a significant contribution for this increased H2/He selectivity value. The permeate flux of H2 and He through both the graphene-coated clay membrane and pure clay membrane has also been noted. The permeate flux of pure H2 and He was 2 × 10–7 and 1.3 × 10–7 mol m–2 s–1 Pa–1 for the clay membrane, whereas for the ″coated″ clay membrane, the values changed to 0.1 × 10–7 and ∼0.05 × 10–7 mol m–2 s–1 Pa–1 at 100 kPa, respectively.

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“…The traditional hydrothermal synthesis is conducted at high temperature and high pressure, causing high cost and energy consumption. To avoid these disadvantages, Sen et al prepared LTA membranes at room temperature using sonication-assisted hydrothermal method, which could not only shorten the crystallization time, but also realize a green synthesis [34].…”

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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Development of LTA zeolite membrane from clay by sonication assisted method at room temperature for H2-CO2 and CO2-CH4 separation

Cited by 40 publications

References 49 publications

A comprehensive review on the synthesis techniques of porous materials for gas separation and catalysis

A comprehensive review on the synthesis techniques of porous materials for gas separation and catalysis

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Inorganic microporous membranes for hydrogen separation: Challenges and solutions

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