کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
636052 | 1456118 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gas separation performance of C/CMS membranes derived from poly(furfuryl alcohol) (PFA) with different chemical structure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Carbon molecular sieve (CMS) membranes derived from two kinds of PFAs synthesized by oxalic acid and iodine catalyst were prepared respectively. In order to investigate the effect of chemical structure of the PFAs on properties of their CMS membranes, TG, FTIR, XRD and HRTEM were employed to characterize the microstructural change of CMS membranes during pyrolysis. Gas separation performance of CMS membranes was also investigated by molecular probe study with pure gases (H2, CO2, O2, N2 and CH4). The results show two kinds of PFAs are composed of a large amount of same function groups by different cross-linking style, which was confirmed by their similar FTIR spectra and slightly different TG curves. After pyrolysis, there are significant differences in microstructure and gas permeation for resultant CMS membranes. The PFA-OA carbon membrane exhibits high carbon yield, smaller d0Â 0Â 2 value (interlayer spacing) and short, slightly irregular but roughly parallel fringes in HRTEM. In contrast, the PFA-I carbon membrane shows a higher gas permeability and lower gas permselectivity in gas permeation experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 361, Issues 1â2, 30 September 2010, Pages 22-27
Journal: Journal of Membrane Science - Volume 361, Issues 1â2, 30 September 2010, Pages 22-27
نویسندگان
Chengwen Song, Tonghua Wang, Huawei Jiang, Xiuyue Wang, Yiming Cao, Jieshan Qiu,