Gas permeation

The gas and vapor transport into films of Hyflon† Ion H, a short-side-chain perfluorosulfonic acid ionomeric (PFSI) membrane, suitable for use in proton exchange membrane fuel cells (PEMFC), has been studied at various temperatures (358C, 508C, and 658C). The permeability and diffusivity values of H

Fixed-site-carrier (FSC) membranes for CO2 capture were prepared and investigated using commercial high molecular weight polyvinyl amine (PVAm) casted on two polysulfone (PSf) supports with different molecular weight cut-off (20,000 and 50,000). Using humidified premixed gas (10 mol% CO2, 90 mol% N2

Imaginary amorphous silica membranes were prepared on a computer and gas permeation simulations were conducted using a dual control plane non-equilibrium molecular dynamics (DCP-NEMD) method. The Melt-Quench technique was employed to prepare various types of imaginary amorphous silica membranes whic

Coal mines are emitting off-gases containing methane of varying content. For environmental as well as economical reasons the gas should be collected and put to further use, i.e., as a feed stock for gas engines or fuel cells. Certain concentration ranges of the coal mine gas require an adjustment of