A highly selective polybenzimidazole-4,4'-(hexafluoroisopropylidene)bis(benzoic acid) membrane for high-temperature hydrogen separation

Title
A highly selective polybenzimidazole-4,4'-(hexafluoroisopropylidene)bis(benzoic acid) membrane for high-temperature hydrogen separation
Authors
최선희김다혜김도영한준영윤창원함형철김진호김형준남석우임태훈한종희
Keywords
membranes; properties and characterization; separation techniques
Issue Date
2015-08
Publisher
Journal of applied polymer science
Citation
VOL 132, 42371-1-42371-9
Abstract
A polymeric gas separation membrane utilizing polybenzimidazole based on 4,40-(hexafluoroisopropylidene)bis(benzoic acid) was prepared. The synthesized membrane has an effective permeating area of 8.3 cm2 and a thickness of 3062 mm. Gas permeation properties of the membrane were determined using H2, CO2 , CO, and N2 at temperatures ranging from 248C to 2008C. The PBI-HFA membranes not only exhibited excellent H2 permeability, but it also displayed superior gas separation performance particularly for H2/N2 and H2/CO2. The permeation parameters for both permeability and selectivity [PH2 and a(H2/N2); PH2 and a(H2/CO2)] obtained for the new material were found to be dependent on trans-membrane pressure difference as well as temperature, and were found to surpass those reported by Robeson in 2008.
URI
http://pubs.kist.re.kr/handle/201004/49695
ISSN
00218995
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE