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Separation of $H_2$ and $N_2$ by PDMS-NaYZeolite Composite Membranes  

Ha, Jung-Im (Department of Chemistry, Sang Myung University)
Kang, Tae-Beom (Department of Chemistry, Sang Myung University)
Publication Information
Membrane Journal / v.20, no.1, 2010 , pp. 47-54 More about this Journal
Abstract
The PDMS-NaYzeolite composite membranes were prepared by adding 1~40 wt% NaYzeolite to PDMS. In order to investigate the characteristics of these membranes, we used the analytical methods such as FT-IR, $^1H$-NMR, and SEM. The permselectivity of $H_2$ and $N_2$ gases through the composite membranes was studied as a function of NaYzeolite contents. The permeability and selectivity ($H_2/N_2$) of PDMS membrane increased as the gas permeation pressure increased. The permeability of the PDMS-NaYzeolite composite membranes increased when 1~10 wt% NaYzeolite was added, and then decreased at higher wt% as NaYzeolite content increased. The selectivity ($H_2/_2$) of PDMS-NaYzeolite composite membranes decreased when 1~2 wt% NaYzeolite was added, and then increased as NaYzeolite content increased. As the $H_2$ permeability increased, the selectivity ($H_2/N_2$) of PDMS-NaYzeolite composite membranes decreased at 0~2 wt% and 10~40 wt% NaYzeolite contents, increased at 2~10 wt% NaYzeolite content.
Keywords
PDMS; NaYzeolite; composite membrane; $H_2$ permeability; selectivity ($H_2/N_2$);
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