نتایج جستجو برای: vapor permeation

تعداد نتایج: 45308  

1999
Soumya Roy Aristippos Gennadios Curtis L. Weller Robert F. Testin

Understanding the mode of transport of water vapor through the film is important for improving the moisture barrier properties of wheat gluten (WG) films. Effective permeability (Peff), solubility (Seff), and diffusion (Deff) coefficients of a hydrophilic cast WG film were determined at 25°C within the relative humidity (RH) range of 0–84% (with a 9–13% RH gradient between upstream and downstre...

2014
Zuzana Sedláková Gabriele Clarizia Paola Bernardo Johannes Carolus Jansen Petr Slobodian Petr Svoboda Magda Kárászová Karel Friess Pavel Izak

Gas and vapor transport properties were studied in mixed matrix membranes containing elastomeric ethylene-octene copolymer (EOC or poly(ethylene-co-octene)) with three types of carbon fillers: virgin or oxidized multi-walled carbon nanotubes (CNTs) and carbon fibers (CFs). Helium, hydrogen, nitrogen, oxygen, methane, and carbon dioxide were used for gas permeation rate measurements. Vapor trans...

Journal: :Journal of Membrane Science 2023

Carbon membranes are a potentially attractive candidate for the in-situ removal of water vapor in CO2 hydrogenation reactions. Their hydrophilicity and pore structure can be tuned by properly adjusting synthesis procedure. Herein, we assess effect carbonization temperature (450–750 °C) on performance supported CMSM terms vapor/gas separation, correlation with changes their surface functionality...

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