New Porous Material Developed For More Efficient Hydrogen Purification

hydrogen purification membrane image

Transmission electronic microscopic images of the new material... image: Nature Materials

You don't hear as many people touting a hydrogen economy as climate change silver bullet as you once did. Nevertheless work continues of new ways to utilize hydrogen in one way or the other to help power the future. Moving us one step more down that road, chemists at Northwestern University say they have developed a new material which will improve the efficiency of hydrogen production:This new porous material addresses the problem of separating hydrocarbon gases and water vapor, speeding up the purification process:

From Daily Tech,

While current separation techniques rely on separating molecules by size, the new porous membrane material separates them by polarizability.  The new membrane, composed of germanium, lead and tellurium, lets hydrogen through faster, as it is a hard, small molecule which interacts little with the charged walls.  The membrane is a hexagonal nanoporous structure, with parallel tubes about two to three nanometers wide.  The gas molecules are at least half a nanometer wide.  The membrane selects hydrogen at a rate approximately four times higher than the current best methods.

More: Nature Materials

via: Daily Tech
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