Seeded growth, silylation, and organic/water separation properties of MCM-48 membranes

Kim, Hyung-Ju; Jang, Kwang‐Suk; Galebach, Peter H.; Gilbert, Christopher Donald; Tompsett, Geoffrey A.; Conner, W. Curtis; Jones, Christopher W.; Nair, Sankar

doi:10.1016/j.memsci.2012.10.012

Cited by 16 publications

(18 citation statements)

References 56 publications

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“…As an alternative, a nondestructive, reusable N 2 physisorption method was developed as a lab-made apparatus for supported inorganic membranes [37]. This method was used to determine the direct pore structure of supported mesoporous silica membranes, and the results were compared with those obtained for powder samples of zeolite [38] and mesoporous silica [39] membranes. Depending on the thickness of membrane, this method requires around 10 consistent membranes.…”

Section: Functionalized Silica Membranesmentioning

confidence: 99%

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications

Kim

Yang

Chung

et al. 2015

Journal of Chemistry

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Mesoporous silica molecular sieves are emerging candidates for a number of potential applications involving adsorption and molecular transport due to their large surface areas, high pore volumes, and tunable pore sizes. Recently, several research groups have investigated the potential of functionalized mesoporous silica molecular sieves as advanced materials in separation devices, such as membranes. In particular, mesoporous silica with a two- or three-dimensional pore structure is one of the most promising types of molecular sieve materials for gas separation membranes. However, several important challenges must first be addressed regarding the successful fabrication of mesoporous silica membranes. First, a novel, high throughput process for the fabrication of continuous and defect-free mesoporous silica membranes is required. Second, functionalization of mesopores on membranes is desirable in order to impart selective properties. Finally, the separation characteristics and performance of functionalized mesoporous silica membranes must be further investigated. Herein, the synthesis, characterization, and applications of mesoporous silica membranes and functionalized mesoporous silica membranes are reviewed with a focus on CO2separation.

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Section: Functionalized Silica Membranesmentioning

confidence: 99%

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications

Kim

Yang

Chung

et al. 2015

Journal of Chemistry

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“…Inorganic membranes, such as Ge‐ZSM‐5 and phenyl functionalized silica membranes, showed excellent separation performance for organics/water mixtures . However, their applications have been somewhat limited by the difficulty in fabrication of continuous inorganic membrane structures on technologically scalable, low‐cost platforms . On the contrary, polymer‐based membranes are more suitable for commercial applications, due to their versatile and tunable properties, as well as easy processibility in large‐scale fabrication processes.…”

Section: Introductionmentioning

confidence: 99%

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Zhou

Chen

et al. 2016

J of Applied Polymer Sci

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To improve the pervaporation performance of PDMS membrane, alkyl groups with different chain length were grafted into PDMS matrix. The prepared membranes were characterized by ATR-IR, DSC, TGA, PALS, and tensile testing. The effects of alkyl grafting on pervaporation performance of PDMS membrane were investigated in separation of ethyl acetate/water mixture. Experimental results show that the separation factor of PDMS membrane is largely improved by alkyl grafting because of the enhanced preferential sorption of ethyl acetate, and this improvement depends on alkyl grafting ratio and alkyl chain length. The total flux of PDMS membrane reduces after alkyl grafting owing to the decreased free volume. When grafting ratio is above 6.9%, membrane grafted with shorter alkyl groups is preferred for pervaporation. The best pervaporation performance is achieved by 9% octyl grafted PDMS membranes with a separation factor of 592 and a total flux of 188 gm 22 h 21 in separation of 1% ethyl acetate/water mixture at 40 8C. Moreover, this octyl grafted PDMS membrane also exhibits excellent separation performance in removal of butyl acetate, methyl-tert-butyl ether, and n-butanol from water.

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“…Other work on organic/water separation by mesoporous silica MCM-48 membranes was carried out by Kim et al However, the separation factor for pure MCM-48 membranes was lower than 1. After silylation, the selectivity was facilitated, but the permeation flux descended considerably as a result of water flux sharp decline [ 223 ].…”

Section: Membrane Materials For Ethanol Recoverymentioning

confidence: 99%

Membranes for bioethanol production by pervaporation

Peng

Lan

Liang

et al. 2021

Biotechnol Biofuels

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Background Bioethanol as a renewable energy resource plays an important role in alleviating energy crisis and environmental protection. Pervaporation has achieved increasing attention because of its potential to be a useful way to separate ethanol from the biomass fermentation process. Results This overview of ethanol separation via pervaporation primarily concentrates on transport mechanisms, fabrication methods, and membrane materials. The research and development of polymeric, inorganic, and mixed matrix membranes are reviewed from the perspective of membrane materials as well as modification methods. The recovery performance of the existing pervaporation membranes for ethanol solutions is compared, and the approaches to further improve the pervaporation performance are also discussed. Conclusions Overall, exploring the possibility and limitation of the separation performance of PV membranes for ethanol extraction is a long-standing topic. Collectively, the quest is to break the trade-off between membrane permeability and selectivity. Based on the facilitated transport mechanism, further exploration of ethanol-selective membranes may focus on constructing a well-designed microstructure, providing active sites for facilitating the fast transport of ethanol molecules, hence achieving both high selectivity and permeability simultaneously. Finally, it is expected that more and more successful research could be realized into commercial products and this separation process will be deployed in industrial practices in the near future. Graphical abstract

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Seeded growth, silylation, and organic/water separation properties of MCM-48 membranes

Cited by 16 publications

References 56 publications

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Membranes for bioethanol production by pervaporation

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Seeded growth, silylation, and organic/water separation properties of MCM-48 membranes

Cited by 16 publications

References 56 publications

Functionalized Mesoporous Silica Membranes for CO2Separation Applications

Functionalized Mesoporous Silica Membranes for CO2Separation Applications

High‐performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

Membranes for bioethanol production by pervaporation

Contact Info

Product

Resources

About

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications

Functionalized Mesoporous Silica Membranes for CO₂Separation Applications