Anodic alumina supported dual-layer microporous silica membranes

Xomeritakis, George; Liu, N.G.; Chen, Z.; Jiang, Ying‐Bing; Köhn, Ralf; Johnson, Phyllis E.; Tsai, Chung-Yi; Shah, Pratik; Khalil, Safia; Singh, S.; Brinker, C. Jeffrey

doi:10.1016/j.memsci.2006.10.039

Cited by 44 publications

(25 citation statements)

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“…[7,8]. Recently, the conventional mesoporous films formed on the surface of a solid substrate have been extent to the hybrid mesoporous membranes composed of arrays of OMMs with unique and tunable mesophase structures within the confined channels of porous membrane by numerous academic labs [9][10][11][12][13][14][15][16]. However, all of those investigations have almost focused on the inorganic hybrid mesoporous silica membranes formed by using inorganic porous membrane, that is anodic alumina membranes (AAMs), as the hard template [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

An organic/inorganic hybrid mesoporous silica membrane: preparation and characterization

Chen

Zhu

et al. 2010

J Porous Mater

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An organic/inorganic hybrid mesoporous silica membrane composed of mesoporous silica materials inside the channels of polycarbonate filtration membrane (PC) was synthesized by using aspiration-induced infiltration method, and the surfactant in as-prepared membrane was removed by employing template-extraction method. The obtained materials were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD),transmission electron microscopy (TEM) and N 2 adsorption-desorption measurement. The SEM images and EDS elemental analyses show that assynthesized materials in PC are one-dimensional silica rods estimated as 200 nm in diameter and 9 lm in length. Moreover, the results of XRD, TEM and N 2 adsorptiondesorption analysis clearly demonstrate that such silica rods are mesoporous materials with two-dimensional hexagonal mesostructure and the average mesopore diameter is about 3.0 nm. In addition, the porosity of organic/inorganic hybrid mesoporous silica membrane was further examined by molecule permeation. It is found that small molecule, such as rhodamine B, can transport across the membrane, but relatively large molecule, such as horse radish peroxidase, can not transport across the membrane, indicating that it is size-selectivity of such a membrane for molecule permeation, which has the potential application in the molecule filters to separate bio-macromolecule from small molecule.

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Section: Introductionmentioning

confidence: 99%

An organic/inorganic hybrid mesoporous silica membrane: preparation and characterization

Chen

Zhu

et al. 2010

J Porous Mater

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“…Commercial gas separation membranes include mainly: polyimide, polysulfones, polycarbonates, polyphenyl Xomeritakis et al (2007) oxides, cellulose derivatives and poly(ethylene oxide) (Ebner and Ritter, 2009;Luis et al, 2012). Numerous studies are reported on polymeric membrane materials attempting to improve their performances for CO 2 /N 2 separation, which logically almost systematically fall below the trade-off curve (Fig.…”

Section: Polymeric Membranesmentioning

confidence: 99%

Membrane Separation Processes for Post-Combustion Carbon Dioxide Capture: State of the Art and Critical Overview

Belaissaoui

Favre

2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Proce´de´s membranaires pour le captage du dioxyde de carbone : e´tat de l'art et revue critique -Les proce´de´s de se´paration par membrane ont e´te´, dans un premier temps, rarement pre´conise´s pour le captage du dioxyde de carbone en post-combustion, les proce´de´s d'absorption gaz-liquide dans un solvant chimique e´tant conside´re´s comme la technologie la plus mature et la plus adapte´e pour assurer cette ope´ration. Une revue critique des possibilite´s et limites des membranes pour le captage du CO 2 par perme´ation gazeuse est pre´sente´e. Les performances de diffe´rents types de mate´riaux membranaires (polyme`res denses, mate´riaux inorganiques, matrices hybrides, membranes liquides) sont discute´es sur le plan de la se´lectiviteé t de la perme´abilite´, en prenant en compte les re´sultats expe´rimentaux les plus re´cents dans ce domaine. Les caracte´ristiques d'une unite´de perme´ation gazeuse mono-e´tage´e fonctionnant en re´gime permanent, de´termine´es par simulation, sont ensuite de´taille´es, en particulier par rapport aux contraintes de purete´et de de´pense e´nerge´tique de l'ope´ration, en lien avec les performances du mate´riau. Finalement, les possibilite´s des dispositifs membranaires multie´tage´s et des proce´de´s hybrides associant une unite´de perme´ation gazeuse et un autre proce´de´, encore peu e´tudie´es dans la litte´rature sont e´voque´es, ainsi que les besoins d'analyse technicoe´conomiques afin de mieux identifier la place et le roˆle optimal des membranes pour le captage du CO 2 .Abstract -Membrane Separation Processes for Post-Combustion Carbon Dioxide Capture: State of the Art and Critical Overview -Membrane processes have been initially seldom considered within a post-combustion carbon dioxide capture framework. More traditional processes, particularly gas-liquid absorption in chemical solvents, are often considered as the most appropriate solution for the first generation of technologies. In this paper, a critical state of the art of gas separation membranes for CO 2 capture is proposed. In a first step, the key performances (selectivity, permeability) of different membrane materials such as polymers, inorganic membranes, hybrid matrices and liquid membranes, including recently reported results, are reviewed. In a second step, the process design characteristics of a single stage membrane unit are studied. Purity and energy constraints are analysed as a function of operating conditions and membrane materials performances. The interest of multistage and hybrid systems, two domains which have not sufficiently investigated up to now, are finally discussed. The importance of technico-economical analyses is highlighted in order to better estimate the optimal role of membranes for CCS applications.

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“…Deposition of sublayer and membrane on the tubular Membralox or Anodisk supports was carried out by dip-or spin-coating, as described in details elsewhere [20,23]. All sols were purified with 0.2 μm syringe filters prior to casting.…”

Section: Membrane Depositionmentioning

confidence: 99%

“…The 250-mm long support was cut in 5-cm long segments with a diamond wafering blade (Buehler) before membrane deposition. Occasionally, we also performed membrane deposition on a low-cost 20-nm Anodisk support [23] (Whatman, UK) as described in detail in section 5. …”

mentioning

confidence: 99%

“…The energy loss edges at 104 eV, 286 eV, and 540 eV are attributed to Si, C, and O, repsectively. The absence of a shoulder edge at ~282 eV indicates that the carbon is mainly σ-bonded as expected from the bridging ethylene group in the BTEE precursor.14 To demonstrate the efficacy of this approach to form selective membranes, the organic template was removed by 30s of UV/ozone exposure, and the permeance of the film to the series of gases He, N 2 , and SF 6 was measured at room temperature using standard techniques [23,[39][40][41]. Figure 7.2 shows the gas permeances and selectivities of the samples after differing numbers of ALD cycles.…”

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confidence: 99%

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Novel Dual-Functional Membrane for Controlling Carbon Dioxide Emissions from Fossil Fuel Power Plants

Brinker¹,

Xomeritakis²,

Tsai³

et al. 2009

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CO 2 captured from coal-fired power plants represents three-quarters of the total cost of an entire carbon sequestration process. Conventional amine absorption or cryogenic separation requires high capital investment and is very energy intensive. Our novel membrane process is energy efficient with great potential for economical CO 2 capture. Three classes of microporous sol-gel derived silica-based membranes were developed for selective CO 2 removal under simulated flue gas conditions (SFG), e.g. feed of 10% vol. CO 2 in N 2 , 1 atm total pressure, T = 50-60ºC, RH>50%, SO 2 >10 ppm. A novel class of amine-functional microporous silica membranes was prepared using an amine-derivatized alkoxysilane precursor, exhibiting enhanced (>70) CO 2 :N 2 selectivity in the presence of H 2 O vapor, but its CO 2 permeance was lagging (<1 MPU). Pure siliceous membranes showed higher CO 2 permeance (1.5-2 MPU) but subsequent densification occurred under prolonged SFG conditions. We incorporated NiO in the microporous network up to a loading of Ni:Si = 0.2 to retard densification and achieved CO 2 permeance of 0.5 MPU and CO 2 :N 2 selectivity of 50 after 163 h exposure to SFG conditions. However, CO 2 permeance should reach greater than 2.0 MPU in order to achieve the cost of electricity (COE) goal set by DOE. We introduced the atomic layer deposition (ALD), a molecular deposition technique that substantially reduces membrane thickness with intent to improve permeance and selectivity.The deposition technique also allows the incorporation of Ni or Ag cations by proper selection of metallorganic precursors. In addition, preliminary economic analysis provides a sensitivity study on the performance and cost of the proposed membranes for CO 2 capture. Significant progress has been made toward the practical applications for CO 2 capture. KEYWORDSInorganic membranes, ceramic membranes, non metallic membranes, carbon dioxide capture, carbon dioxide sequestration, gas separation, high temperature gas separation, flue gas CO 2 capture, sol-gel, global warming 4 Providing a reliable, clean and economical energy source is a priority of the US government. Coal is the largest source of fossil fuel for the generation of electricity worldwide and US has the leading recoverable coal reserve among the nations. However, currently coal is also one of the largest sources of carbon dioxide emissions which contribute greatly to global warming. The challenge is to capture CO 2 from flue gas and subsequently sequestrated. Success of CO2 capture from flue gas is hinged on the breakthrough of capture processes. The use of a membrane system with high CO2 permeance and selectivity holds promise for reducing costs by avoiding the expensive absorber/stripper equipment required with liquid-amine-based systems.This work has explored four types of silica based membranes for CO 2 separation: pure, amine-derivatized, nickel-doped silica membrane and PA-ALD deposited silica membrane, one characterized by the deposition method.Pure, amine-derivatized and ...

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Anodic alumina supported dual-layer microporous silica membranes

Cited by 44 publications

References 17 publications

An organic/inorganic hybrid mesoporous silica membrane: preparation and characterization

An organic/inorganic hybrid mesoporous silica membrane: preparation and characterization

Membrane Separation Processes for Post-Combustion Carbon Dioxide Capture: State of the Art and Critical Overview

Novel Dual-Functional Membrane for Controlling Carbon Dioxide Emissions from Fossil Fuel Power Plants

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