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- Publisher
- Springer Journals
- Copyright
- 2011 The Polymer Society of Korea and Springer Netherlands
- ISSN
- 1598-5032
- eISSN
- 2092-7673
- DOI
- 10.1007/s13233-011-1001-y
- Publisher site
- See Article on Publisher Site
Abstract
Abstract This study examined the effect of palladium (Pd) ions on the performance and stability of silver-polymer complex membranes composed of AgBF4 and poly(N-vinyl pyrrolidone) (PVP) for the separation of propylene/propane mixtures. The separation performances including the selectivity of propylene/propane and mixed gas permeance through the PVP/AgBF4 membrane decreased continuously due mainly to the reduction of silver ions to silver nano-particles. On the other hand, upon the addition of Pd ions, enhanced membrane stability along with the higher separation performance was achieved. This demonstrates that Pd ions play a role in preventing the reduction of silver ions and participating directly in the facilitated propylene transport. UV analysis of the membranes shows that the rate of silver nano-particle formation was retarded significantly by the addition of Pd salts.
Journal
"Macromolecular Research" – Springer Journals
Published: Oct 1, 2011