Abstract
Novel composite membranes, which delivered high separation performance for propylene/propane mixtures, were developed by coating inert poly(ethylene-co- propylene) rubber (EPR) onto a porous polyester substrate, followed by the physical distribution of AgBF4. Scanning electron microscopy-wavelength dispersive spectrometer (SEM-WDS) revealed that silver salts were uniformly distributed in the EPR layer. The physical dispersion of the silver salts in the inert polymer matrix, without specific interaction, was characterized by FT-IR and FT-Raman spectroscopy. The high separation performance was presumed to stem from the in-situ dissolution of crystalline silver ionic aggregates into free silver ions, which acted as an active propylene carrier within a propylene environment, leading to facilitated propylene transport through the membranes. The membranes were functional at all silver loading levels, exhibiting an unusually low threshold carrier concentration (less than 0.06 of silver weight fraction). The separation properties of these membranes, i.e. the mixed gas selectivity of propylene/propane ∼55 and mixed gas permeance ∼7 GPU, were stable for several days.
| Original language | English |
|---|---|
| Pages (from-to) | 343-347 |
| Number of pages | 5 |
| Journal | Macromolecular Research |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2007 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
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Novel composite membranes comprising silver salts physically dispersed in poly(ethylene-co-propylene) for the separation of propylene/propane. / Kim, Jong Hak; Min, Byoung Ryul; Kim, Yong Woo; Kang, Sang Wook; Won, Jongok; Kang, Yong Soo.
In: Macromolecular Research, Vol. 15, No. 4, 01.01.2007, p. 343-347.Research output: Contribution to journal › Article
TY - JOUR
T1 - Novel composite membranes comprising silver salts physically dispersed in poly(ethylene-co-propylene) for the separation of propylene/propane
AU - Kim, Jong Hak
AU - Min, Byoung Ryul
AU - Kim, Yong Woo
AU - Kang, Sang Wook
AU - Won, Jongok
AU - Kang, Yong Soo
PY - 2007/1/1
Y1 - 2007/1/1
N2 - Novel composite membranes, which delivered high separation performance for propylene/propane mixtures, were developed by coating inert poly(ethylene-co- propylene) rubber (EPR) onto a porous polyester substrate, followed by the physical distribution of AgBF4. Scanning electron microscopy-wavelength dispersive spectrometer (SEM-WDS) revealed that silver salts were uniformly distributed in the EPR layer. The physical dispersion of the silver salts in the inert polymer matrix, without specific interaction, was characterized by FT-IR and FT-Raman spectroscopy. The high separation performance was presumed to stem from the in-situ dissolution of crystalline silver ionic aggregates into free silver ions, which acted as an active propylene carrier within a propylene environment, leading to facilitated propylene transport through the membranes. The membranes were functional at all silver loading levels, exhibiting an unusually low threshold carrier concentration (less than 0.06 of silver weight fraction). The separation properties of these membranes, i.e. the mixed gas selectivity of propylene/propane ∼55 and mixed gas permeance ∼7 GPU, were stable for several days.
AB - Novel composite membranes, which delivered high separation performance for propylene/propane mixtures, were developed by coating inert poly(ethylene-co- propylene) rubber (EPR) onto a porous polyester substrate, followed by the physical distribution of AgBF4. Scanning electron microscopy-wavelength dispersive spectrometer (SEM-WDS) revealed that silver salts were uniformly distributed in the EPR layer. The physical dispersion of the silver salts in the inert polymer matrix, without specific interaction, was characterized by FT-IR and FT-Raman spectroscopy. The high separation performance was presumed to stem from the in-situ dissolution of crystalline silver ionic aggregates into free silver ions, which acted as an active propylene carrier within a propylene environment, leading to facilitated propylene transport through the membranes. The membranes were functional at all silver loading levels, exhibiting an unusually low threshold carrier concentration (less than 0.06 of silver weight fraction). The separation properties of these membranes, i.e. the mixed gas selectivity of propylene/propane ∼55 and mixed gas permeance ∼7 GPU, were stable for several days.
UR - http://www.scopus.com/inward/record.url?scp=34447280386&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34447280386&partnerID=8YFLogxK
U2 - 10.1007/BF03218797
DO - 10.1007/BF03218797
M3 - Article
AN - SCOPUS:34447280386
VL - 15
SP - 343
EP - 347
JO - Macromolecular Research
JF - Macromolecular Research
SN - 1598-5032
IS - 4
ER -