http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lee, Jung Hyun,Lee, Jongmyeong,Jo, Hye Jin,Seong, Jong Geun,Kim, Ju Sung,Lee, Won Hee,Moon, Jongho,Lee, Dahun,Oh, Woong Jin,Yeo, Jeong-gu,Lee, Young Moo Elsevier 2017 Journal of membrane science Vol.539 No.-
<P><B>Abstract</B></P> <P>Recently developed crosslinked-thermally rearranged (XTR) polymeric membranes, which show enhanced gas separation, are applicable for CO<SUB>2</SUB> separation from post-combustion gases. Moreover, the resulting thermally rearranged polybenzoxazole (TR-PBO) structure that is thermally induced from hydroxyl-polyimides (HPI) provides high thermal and chemical resistance, which is favorable for gas separation applications containing condensable gases such as water vapor. Herein, the influence of water vapor on the CO<SUB>2</SUB> capture efficiency was evaluated using XTR poly(benzoxazole-<I>co</I>-imide) (XTR-PBOI) hollow fiber membrane modules which were compared with crosslinked HPI (XHPI) in mixture gas and single gases for CO<SUB>2</SUB> and N<SUB>2</SUB>. The results revealed that the permeate CO<SUB>2</SUB> flow rate in the hydrophobic XTR-PBOI module showed enhanced separation performance, whereas the flow rate severely decreased in the relatively hydrophilic XHPI module, reflecting more significant capillary condensation effect in the XHPI membranes. Both membrane modules showed excellent plasticization resistance, and the XTR-PBOI hollow fiber membrane module presented reasonable long-term stability over 240h.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Effect of water vapor in CO<SUB>2</SUB> capture using an XTR-PBOI hollow fiber membrane module. </LI> <LI> XTR hollow fiber membrane modules were compared in a simulated wet flue gas system. </LI> <LI> Capillary condensation in porous substructure changed membrane performance under wet conditions. </LI> <LI> The CO<SUB>2</SUB> capture efficiency, CO<SUB>2</SUB> purity and recovery drastically enhanced in the presence of water. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Conceptual image of wet-mixed gas transport (left), relative permeate CO<SUB>2</SUB> and N<SUB>2</SUB> flow rate (middle) in XHPI and XTR-PBOI hollow fiber membranes, and long-term stability (right) of XTR-PBOI membranes.</P> <P>[DISPLAY OMISSION]</P>