کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
638792 1456183 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Permeabilities of methanol, ethanol and dimethyl ether in new composite membranes: A comparison with Nafion membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Permeabilities of methanol, ethanol and dimethyl ether in new composite membranes: A comparison with Nafion membranes
چکیده انگلیسی

New composite membranes were prepared by solution casting from sulfonated poly(ether ether ketone), poly(vinylidene fluoride) and phosphotungstic acid. Their structures were characterized using XRD, DSC and FT-IR. The permeability of methanol, ethanol and dimethyl ether in composite membranes ranged from 1.9 to 3.7 × 10−7, 7.4 to 20 × 10−8 and 1.6 to 3.2 × 10−8 cm2/s, respectively. These values were about or more than one order of magnitude lower than those of Nafion® 117 membrane measured under the same condition. The water uptake and the swelling ratio of composite membranes were also studied, and composite membranes showed good water stability within measurement range of temperature. Higher selectivity values were observed for composite membranes compared with Nafion® 117 membrane.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 289, Issues 1–2, 15 February 2007, Pages 51–57
نویسندگان
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