TY  - BOOK
AU  - Staudt-Bickel,C.
AU  - Koros,W.J.
TI  - Olefin/paraffin gas separations with 6FDA-based polyimide membranes
KW  - POLYIMIDE
KW  - MEMBRANE
KW  - GAS SEPARATION
KW  - OLEFIN
KW  - PARAFFIN
KW  - PERMEATION
KW  - SORPTION
N2  - Pure gas permeation and sorption experiments were carried out for the gases ethylene, ethane, propylene and propane using polyimides based on 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). Composite membranes and free films were used. Experiments were performed at 308 K and feed pressures up to 17 atm for ethylene and ethane and 9 atm for propylene and propane. Mixed gas permeation experiments were carried out with 50 : 50 olefin/paraffin feed mixtures. For all investigated polyimides, the ideal ethylene/ethane separation factor ranged between 3.3 and 4.4 and the ideal propylene/propane separation factor ranged between 10 and 16 at a feed pressure of 3.8 atm and 308 K. In mixed gas permeation experiments, up to 20
UR  - https://drive.google.com/file/d/1VnK6bb6CGzt8M3zFr23MugPePST8BuTD/view?usp=drivesdk
ER  -