Effects of CO 2 on a High Performance Hollow-Fiber Membrane for Natural Gas Purification

Abstract
A 6FDA-based, cross-linkable polyimide was characterized in the form of a defect-free asymmetric hollow-fiber membrane. The novel membrane was cross-linked at various temperatures and tested for natural gas purification in the presence of high CO2 partial pressures. The cross-linked membrane material shows high intrinsic separation performance for CO2 and CH4 (selectivity ∼49, CO2 permeability ∼161 barrer, with a feed at 65 psia, 35 °C, and 10% CO2). Cross-linked asymmetric hollow-fiber membranes made from the material show good resistance to CO2-induced plasticization. Carbon dioxide partial pressures as high as ∼400 psia were employed, and the membrane was shown to be promisingly stable under these aggressive conditions. The performance of the membrane was also analyzed using the dual-mode sorption/transport model. © 2010 American Chemical Society.

Citation
Omole IC, Adams RT, Miller SJ, Koros WJ (2010) Effects of CO 2 on a High Performance Hollow-Fiber Membrane for Natural Gas Purification . Ind Eng Chem Res 49: 4887–4896. Available: http://dx.doi.org/10.1021/ie100084s.

Acknowledgements
The authors acknowledge financial support from Chevron Energy Technology Company and Award no. KUS-11-011-21 made by King Abdullah University of Science and Technology (KAUST).

Publisher
American Chemical Society (ACS)

Journal
Industrial & Engineering Chemistry Research

DOI
10.1021/ie100084s

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