کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
634052 | 1456053 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of MFI zeolite intermediate layers on gas separation performance of carbon molecular sieve (CMS) membranes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
To strengthen interfacial adhesion between selective carbon molecular sieve (CMS) layers and α-Al2O3 substrates, mordenite framework inverted (MFI)-type intermediate layers were synthesized to reduce pore sizes and improve chemical characteristics of underlying substrates and consequently facilitate formation of CMS layers. MFI-type zeolite intermediate layers were prepared on α-Al2O3 substrates via secondary growth of seeds to form polycrystalline zeolite layers with a-oriented crystallites. These crystallites increased cross-link strength between separation layers as well as gas pair separation performance. When a porous substrate was treated with silica seeds and covered with an MFI intermediate layer, CMS selectivity for H2/CH4 increased to 260.9 with permeability towards H2 of 2224 Barrer. These modifications improved the mechanical stability of CMS layers and will assist in their commercialization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 446, 1 November 2013, Pages 220-229
Journal: Journal of Membrane Science - Volume 446, 1 November 2013, Pages 220-229
نویسندگان
Ming-Yen Wey, Hui-Hsin Tseng, Chian-kai Chiang,