G. Xomeritakis

artykuł

Tubular ceramic-supported sol–gel silica-based membranes for flue gas carbon dioxide capture and sequestration

G. Xomeritakis, C.Y. Tsai, Y.B. Jiang, C.J. Brinker

Journal of Membrane Science > 2009 > 341 > 1-2 > 30-36

Pure, amine-derivatized and nickel-doped sol–gel silica membranes have been developed on tubular Membralox-type commercial ceramic supports for the purpose of carbon dioxide separation from nitrogen under coal-fired power plant flue gas conditions. An extensive synthetic and permeation test study was carried out in order to optimize membrane CO ₂ permeance, CO ₂ :N ₂ separation...

artykuł

Anodic alumina supported dual-layer microporous silica membranes

G. Xomeritakis, N.G. Liu, Z. Chen, Y.-B. Jiang, więcej

Journal of Membrane Science > 2007 > 287 > 2 > 157-161

We present a new processing scheme for the deposition of microporous, sol–gel derived silica membranes on inexpensive, commercially available anodic alumina (Anodisk™) supports. In a first step, a surfactant-templated mesoporous silica sublayer (pore size 2–6nm) is deposited on the Anodisk support by dip-coating, in order to provide a smooth transition from the pore size of the support (20 or 100nm)...

artykuł

Aerosol-assisted deposition of surfactant-templated mesoporous silica membranes on porous ceramic supports

G. Xomeritakis, C.M. Braunbarth, B. Smarsly, N. Liu, więcej

Microporous and Mesoporous Materials > 2003 > 66 > 1 > 91-101

We present a new approach for rapid formation of mesoporous, surfactant-templated silica membranes on coarse-pore α-Al ₂ O ₃ ceramic supports. A surfactant-silica sol is dispersed in the gas phase in the form of small droplets and delivered to the surface of the planar support by a N ₂ carrier stream. Coalescence of deposited sol droplets combined with solvent evaporation-induced...

artykuł

Organic-templated silica membranes - I. Gas and vapor transport properties

G. Xomeritakis, S. Naik, C.M. Braunbarth, C.J. Cornelius, więcej

Journal of Membrane Science > 2003 > 215 > 1-2 > 225-233

A novel and efficient method for molecular engineering of the pore size and porosity of microporous sol-gel silica membranes is demonstrated in this communication. By adding a suitable organic template (e.g. tetraethyl- or tetrapropylammonium bromide) in polymeric silica sols, otherwise known to result in microporous membranes with pores in the range 3-4Å, we can 'shift' the pore size to 5-6Å, as...

artykuł

Evolution of pore size distribution and average pore size of porous ceramic membranes during modification by counter-diffusion chemical vapor deposition

G. Xomeritakis, J. Han, Y.S. Lin

Journal of Membrane Science > 1997 > 124 > 1 > 27-42

The modification of porous ceramic membranes by counter-diffusion chemical vapor deposition (CVD) is studied theoretically and experimentally. Numerical simulations of the evolution of the membrane permeance, average pore size and pore size distribution as a function of extent of modification are presented and compared with experimetal data. It is found that the change of the average pore size of...

artykuł

Fabrication of a thin palladium membrane supported in a porous ceramic substrate by chemical vapor deposition

G. Xomeritakis, Y.S. Lin

Journal of Membrane Science > 1996 > 120 > 2 > 261-272

A thin, gas-tight palladium (Pd) membrane was prepared by the counter-diffusion chemical vapor deposition (CVD) process employing palladium chloride (PdCl ₂ ) vapor and H ₂ as Pd precursors. A disk-shaped, two-layer porous ceramic membrane consisting of a fine-pore γ-Al ₂ O ₃ top layer and a coarse-pore α-Al ₂ O ₃ substrate was used as Pd membrane support...

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Wyniki wyszukiwania dla: G. Xomeritakis

Tubular ceramic-supported sol–gel silica-based membranes for flue gas carbon dioxide capture and sequestration

Anodic alumina supported dual-layer microporous silica membranes

Aerosol-assisted deposition of surfactant-templated mesoporous silica membranes on porous ceramic supports

Organic-templated silica membranes - I. Gas and vapor transport properties

Evolution of pore size distribution and average pore size of porous ceramic membranes during modification by counter-diffusion chemical vapor deposition

Fabrication of a thin palladium membrane supported in a porous ceramic substrate by chemical vapor deposition

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INFONA - portal komunikacji naukowej

Wyniki wyszukiwania dla: G. Xomeritakis

Tubular ceramic-supported sol–gel silica-based membranes for flue gas carbon dioxide capture and sequestration

Anodic alumina supported dual-layer microporous silica membranes

Aerosol-assisted deposition of surfactant-templated mesoporous silica membranes on porous ceramic supports

Organic-templated silica membranes - I. Gas and vapor transport properties

Evolution of pore size distribution and average pore size of porous ceramic membranes during modification by counter-diffusion chemical vapor deposition

Fabrication of a thin palladium membrane supported in a porous ceramic substrate by chemical vapor deposition

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