Carbon molecular sieve membrane from a microporous spirobisindane-based polyimide precursor with enhanced ethylene/ethane mixed-gas selectivity

Octavio Salinas, Xiaohua Ma, Yingge Wang, Yu Han, Ingo Pinnau
2017 RSC Advances  
A highly selective carbon molecular sieve (CMS) membrane derived from a novel spirobisindane-based polyimide was synthesized. The mixed-gas ethylene/ethane selectivity of 15.6 at 20 bar is the highest reported value for CMS-type membranes to date.
doi:10.1039/c6ra24699k fatcat:ci7tvxui4na3de7cgxdcfniw24