Effect of palladium ion on facilitated olefin transport through silver-polymer complex membranes

被引：7
|
作者：
Park, Hye Hun [2 ]
Won, Jongok [3 ]
Pyo, Sung Gyu [1 ]
Park, Hansoo [1 ]
机构：
[1] Chung Ang Univ, Sch Integrat Engn, Seoul 156756, South Korea
[2] Korea Inst Sci & Technol, Seoul 136791, South Korea
[3] Sejong Univ, Dept Appl Chem, Seoul 143747, South Korea
来源：
MACROMOLECULAR RESEARCH | 2011年 / 19卷 / 10期
关键词：
palladium; silver; polymer; membrane; facilitated transport; OLEFIN/PARAFFIN SEPARATION; NANOPARTICLES; ELECTROLYTES; MECHANISM; REDUCTION; PROPYLENE;
D O I：
10.1007/s13233-011-1001-y
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
This study examined the effect of palladium (Pd) ions on the performance and stability of silver-polymer complex membranes composed of AgBF(4) 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/AgBF(4) 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.
引用
收藏
页码：1077 / 1081
页数：5
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