METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES
摘要
The present invention discloses a novel method to improve the selectivities of polybenzoxazole (PBO) membranes prepared from aromatic polyimide membranes for gas, vapor, and liquid separations. The PBO membranes that were prepared by thermal treating aromatic polyimide membranes containing between 0.05 and 20 wt-% of a poly(styrene sulfonic acid) polymer. These polymers showed up to 95% improvement in selectivity for CO2/CH4 and H2/CH4 separations compared to PBO membranes prepared from corresponding aromatic polyimide membranes without a poly(styrene sulfonic acid) polymer.
申请公布号
WO2011037706(A2)
申请公布日期
2011.03.31
申请号
WO2010US45964
申请日期
2010.08.19
申请人
UOP LLC;LIU, CHUNQING;MINKOV, RAISA;TANG, MAN-WING;ZHOU, LUBO;BRICKER, JEFFERY C.
发明人
LIU, CHUNQING;MINKOV, RAISA;TANG, MAN-WING;ZHOU, LUBO;BRICKER, JEFFERY C.