Asymmetric Hollow Fiber Membranes for Separation of CO 2 from Hydrocarbons and Fluorocarbons at High-Pressure Conditions Relevant to C 2 F 4 Polymerization

Handle URI:
http://hdl.handle.net/10754/597616
Title:
Asymmetric Hollow Fiber Membranes for Separation of CO 2 from Hydrocarbons and Fluorocarbons at High-Pressure Conditions Relevant to C 2 F 4 Polymerization
Authors:
Kosuri, Madhava R.; Koros, William J.
Abstract:
Separation of high-pressure carbon dioxide from fluorocarbons is important for the production of fluoropolymers such as poly(tetrafluoroethylene). Typical polymeric membranes plasticize under high CO2 partial pressure conditions and fail to provide adequate selective separations. Torlon, a polyamide-imide polymer, with the ability to form interchain hydrogen bonding, is shown to provide stability against aggressive CO2 plasticization. Torlon membranes in the form of asymmetric hollow fibers (the most productive form of membranes) are considered for an intended separation of CO 2/C2F4. To avoid safety issues with tetrafluoroethylene (C2F4), which could detonate under testing conditions, safer surrogate mixtures (C2H2F 2 and C2H4) are considered in this paper. Permeation measurements (at 35 °C) indicate that the Torlon membranes are not plasticized even up to 1250 psi of CO2. The membranes provide mixed gas CO2/C2H2F2 and CO 2/C2H4 selectivities of 100 and 30, respectively, at 1250 psi partial pressures of CO2. On the basis of the measured separation performances of CO2/C2H 2F2 and CO2/C2H4 mixtures, the selectivity of the CO2/C2F4 mixture is expected to be greater than 100. Long-term stability studies indicate that the membranes provide stable separations over a period of 5 days at 1250 psi partial pressures of CO2, thereby making the membrane approach attractive. © 2009 American Chemical Society.
Citation:
Kosuri MR, Koros WJ (2009) Asymmetric Hollow Fiber Membranes for Separation of CO 2 from Hydrocarbons and Fluorocarbons at High-Pressure Conditions Relevant to C 2 F 4 Polymerization . Ind Eng Chem Res 48: 10577–10583. Available: http://dx.doi.org/10.1021/ie900803z.
Publisher:
American Chemical Society (ACS)
Journal:
Industrial & Engineering Chemistry Research
KAUST Grant Number:
KUS-11-011-21
Issue Date:
2-Dec-2009
DOI:
10.1021/ie900803z
Type:
Article
ISSN:
0888-5885; 1520-5045
Sponsors:
The authors thankfully acknowledge the financial support provided by National Science Foundation-Science and Technology Center (NSF-STC), a center for environmentally responsible solvents and processes. This publication was also based on work Supported in part by Award No. KUS-11-011-21 made by King Abdullah University of Science and Technology (KAUST). The authors also acknowledge Solvay Advanced Polymers for generously providing the Torlon.
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Full metadata record

DC FieldValue Language
dc.contributor.authorKosuri, Madhava R.en
dc.contributor.authorKoros, William J.en
dc.date.accessioned2016-02-25T12:43:07Zen
dc.date.available2016-02-25T12:43:07Zen
dc.date.issued2009-12-02en
dc.identifier.citationKosuri MR, Koros WJ (2009) Asymmetric Hollow Fiber Membranes for Separation of CO 2 from Hydrocarbons and Fluorocarbons at High-Pressure Conditions Relevant to C 2 F 4 Polymerization . Ind Eng Chem Res 48: 10577–10583. Available: http://dx.doi.org/10.1021/ie900803z.en
dc.identifier.issn0888-5885en
dc.identifier.issn1520-5045en
dc.identifier.doi10.1021/ie900803zen
dc.identifier.urihttp://hdl.handle.net/10754/597616en
dc.description.abstractSeparation of high-pressure carbon dioxide from fluorocarbons is important for the production of fluoropolymers such as poly(tetrafluoroethylene). Typical polymeric membranes plasticize under high CO2 partial pressure conditions and fail to provide adequate selective separations. Torlon, a polyamide-imide polymer, with the ability to form interchain hydrogen bonding, is shown to provide stability against aggressive CO2 plasticization. Torlon membranes in the form of asymmetric hollow fibers (the most productive form of membranes) are considered for an intended separation of CO 2/C2F4. To avoid safety issues with tetrafluoroethylene (C2F4), which could detonate under testing conditions, safer surrogate mixtures (C2H2F 2 and C2H4) are considered in this paper. Permeation measurements (at 35 °C) indicate that the Torlon membranes are not plasticized even up to 1250 psi of CO2. The membranes provide mixed gas CO2/C2H2F2 and CO 2/C2H4 selectivities of 100 and 30, respectively, at 1250 psi partial pressures of CO2. On the basis of the measured separation performances of CO2/C2H 2F2 and CO2/C2H4 mixtures, the selectivity of the CO2/C2F4 mixture is expected to be greater than 100. Long-term stability studies indicate that the membranes provide stable separations over a period of 5 days at 1250 psi partial pressures of CO2, thereby making the membrane approach attractive. © 2009 American Chemical Society.en
dc.description.sponsorshipThe authors thankfully acknowledge the financial support provided by National Science Foundation-Science and Technology Center (NSF-STC), a center for environmentally responsible solvents and processes. This publication was also based on work Supported in part by Award No. KUS-11-011-21 made by King Abdullah University of Science and Technology (KAUST). The authors also acknowledge Solvay Advanced Polymers for generously providing the Torlon.en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleAsymmetric Hollow Fiber Membranes for Separation of CO 2 from Hydrocarbons and Fluorocarbons at High-Pressure Conditions Relevant to C 2 F 4 Polymerizationen
dc.typeArticleen
dc.identifier.journalIndustrial & Engineering Chemistry Researchen
dc.contributor.institutionGeorgia Institute of Technology, Atlanta, United Statesen
kaust.grant.numberKUS-11-011-21en
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