Selective Mass Transport of CO2 Containing Mixtures through Zeolite Membranes

Mass Transport through Charged Membranes

Fast mass transport through carbon nanotube membranes.

The May 19, 2006 issue of Science included a paper by Holt et al. on "Fast Mass Transport Through Sub-2-Nanometer Carbon Nanotubes". The paper was also featured on the cover, showing methane molecules translating inside a carbon nanotube (CNT). The authors explained how they prepared 2-6-mum thin membranes consisting of double-walled carbon nanotubes (DWNTs) all aligned perpendicular to the app...

Zeolite screening for the separation of gas mixtures containing SO2, CO2 and CO.

We used a combination of experiments and molecular simulations to investigate at the molecular level the effects of zeolite structure on the adsorption and diffusion of sulfur dioxide, carbon dioxide and carbon monoxide as well as separation processes of their mixtures. Our study involved different zeolite topologies and revealed numerous structure-property trends depending on the temperature a...

Transport of Metallic Ions through Polyaniline-Containing Composite Membranes

Universidade Federal do Rio Grande do Sul, PPGEM, Av. Bento Gonçalves, 9500, Setor 4, Prédio 74, Cep. 91501-970, Porto Alegre, RS, Brazil, Departament de Quı́mica, Escola Politècnica Superior, Universitat de Lleida, c/Jaume II no. 69, Lleida E-25001, Spain, Centro Universitário Feevale, ICET, RS 239-2755, Cep. 93352-000, Novo Hamburgo, RS, Brazil, Departament d’Enginyeria Quı́mica, ETS d’Enginyer...

Selective extraction using preferential transport through adsorptive membranes.

Selective extraction of a protein from a mixture can be accomplished using an adsorptive membrane and low displacement recuperative parametric pumping. Low displacement recuperative parametric pumping can lead to the preferential transport of an adsorbing solute and the rejection of nonadsorbing solutes by the adsorptive membrane. Using a protein mixture consisting of lysozyme and myoglobin, we...

Nano composite PEBAX® membranes: Effect of zeolite X filler on CO2 permeation

A PEBAX-nano zeolite X mixed matrix membrane was fabricated and operationally characterized using single gas (CO2) permeation. X-ray diffraction (XRD) analysis was used to study the arrangement of polymer chains of mixed matrix membrane. The membranes were characterized by scanning electron microscopy (SEM) to study cross-sectional morphology. The single gas permeability were carried...