کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7019711 | 1455936 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An ensemble synthesis strategy for fabrication of hollow fiber T-type zeolite membrane modules
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
T-type zeolite membranes were prepared on four-channel α-Al2O3 hollow fibers by secondary growth method with an ensemble synthesis strategy. Prior to the membrane synthesis, a bundle of α-Al2O3 hollow fibers were assembled on the ceramic bases by enamel sealing. The membrane modules with membrane areas of 0.03â¯m2 and 0.54â¯m2 were then seeded with ball-milled T-type zeolite crystals by dip-coating. A uniform and continuous T-type zeolite seed layer was obtained for a seed concentration of 1.5â¯wt% and a coating time of 15â¯s. The seeded modules were then immersed in synthesis solution for ensemble hydrothermal crystallization. After optimizing the synthesis parameters, high-quality hollow fiber zeolite membrane modules could be prepared with good reproducibility. The membrane module with 0.03â¯m2 exhibited a water permeation flux of 2.25â¯kgâ¯mâ2 hâ1 and a separation factor of 1348 for PV dehydration of 90â¯wt% ethanol/water mixture at 348â¯K. The membrane modules had long-term stability in acidic solution (pH~3) for 450â¯h as well. A pilot-scale apparatus composed of two 0.54â¯m2 membrane modules connected in series was further constructed for PV dehydration of 90â¯wt% isopropanol/water. The ensemble synthesis strategy paves a way for the industrialization of hollow fiber T-type zeolite membranes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 563, 1 October 2018, Pages 460-469
Journal: Journal of Membrane Science - Volume 563, 1 October 2018, Pages 460-469
نویسندگان
Miaomiao Ji, Xuechao Gao, Xuerui Wang, Yuting Zhang, Ji Jiang, Xuehong Gu,