کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4988986 | 1455966 | 2017 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gas separation performance of supported carbon molecular sieve membranes based on soluble polybenzimidazole
ترجمه فارسی عنوان
عملکرد جداسازی گاز از غشاء غربال مولکولی کربن بر اساس پلی بژینیزادول محلول
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کلمات کلیدی
پلی آنزیمیدازول، غشای غربال مولکولی کربن، جداسازی گاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
A poly [2, 2â²-(p-oxydiphenylene)-5, 5â²-bibenzimidazole] (OPBI) was employed to pyrolyze under an inert Ar atmosphere to produce alumina-supported carbon molecular sieve membranes (CMSMs) for CO2/CH4 gas separation. Pyrolysis temperature was also varied from 550 °C to 750 °C to tailor the carbon microstructure and then optimize the separation performances of CMSMs. A structure-performance relationship was established that high pyrolysis temperature can promote the generation of a compact and ordered graphite carbon structure and further give rise to a remarkable combinations of separation factor and gas permeability of CMSMs. Much effort has been made to reduce the thickness of CMSMs via lowering the concentration of polymer precursors or increasing the dip-coating withdraw speed. The optimal thinner CMSMs separately prepared from diluted OPBI polymer solution and increased dip-coating withdraw speed revealed a remarkable improvement of CO2 permeance, transcending the Robeson's upper bound of polymer membranes and of great potential in natural gas purifications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 533, 1 July 2017, Pages 1-10
Journal: Journal of Membrane Science - Volume 533, 1 July 2017, Pages 1-10
نویسندگان
Wenmei Jiao, Yujie Ban, Zixing Shi, Xuesong Jiang, Yanshuo Li, Weishen Yang,