Vapor permeation studies of membranes made from molecular squares

Synthesis, Characterization and Vapor Permeation Performance of B-ZSM-5 Membranes

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

Oxygen Permeation Studies of Ba0.5Sr0.5Co0.8Fe0.2Ox Asymmetric Membranes

Molecular simulations of hydrogen andmethane permeation through poremouthmodified zeolite membranes

Membrane-based separations are an attractive means to separate hydrogen from gas mixtures in order to use hydrogen in energy-related applications. Zeolite membranes are robust materials that are well suited to be used in harsh conditions, but they are not typically selective for hydrogen. Several studies have shown that highly selective separations of hydrogen are possible using zeolite membran...

Mechanisms of molecular permeation through nanoporous graphene membranes.

We present an investigation of molecular permeation of gases through nanoporous graphene membranes via molecular dynamics simulations; four different gases are investigated, namely helium, hydrogen, nitrogen, and methane. We show that in addition to the direct (gas-kinetic) flux of molecules crossing from the bulk phase on one side of the graphene to the bulk phase on the other side, for gases ...

synthesis, characterization and vapor permeation performance of b-zsm-5 membranes

in the present work, b-zsm-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. the tio2- bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. the uniform membrane intermediate layers with low permeation resistance were prepared o...