کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4990080 | 1456941 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High throughput catalytic dechlorination of TCE by hollow fiber nanocomposite membranes with embedded Pd and Pd-Au catalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: High throughput catalytic dechlorination of TCE by hollow fiber nanocomposite membranes with embedded Pd and Pd-Au catalysts High throughput catalytic dechlorination of TCE by hollow fiber nanocomposite membranes with embedded Pd and Pd-Au catalysts](/preview/png/4990080.png)
چکیده انگلیسی
Hollow fiber nanocomposite membranes were fabricated from casting mixtures that included polysulfone (PSf), N-methyl-2-pyrrolidone (NMP), polyethylene glycol (PEG) as well as metallic (Pd) or bimetallic (Pd-Au) nanocatalysts supported on exfoliated graphite nanoplatelets (xGnPs). Morphological, structural, and separation properties of these membranes were characterized and compared with catalyst-free PSf and catalyst-free xGnP/PSf membranes. For all three fillers tested (xGnP, Pd/xGnP, Pd-Au/xGnP), nanocomposite hollow fiber membranes spun with 2.5 cm gap width were significantly (α = 0.1) more permeable than membranes of the same composition but spun with zero gap width. The normalized reactive fluxes of Pd-Au/xGnP/PSf membranes (7.2 ± 1.1 and 6.5 ± 1.2 (m/s)(MH2)â1(gPd/gPSf)â1) spun with 0 cm and 2.5 cm gap widths were significantly higher than those of Pd/xGnP/PSf membranes (2.0 ± 1.1 and 2.5 ± 0.6 (m/s)(MH2)â1(gPd/gPSf)â1). The study demonstrates that fabrication of hollow fiber membranes filled with xGnP-supported catalysts is feasible and allows for high throughput dehalogenation of TCE in a flow-through regime. In addition to higher catalytic activity in the TCE dehalogenation reaction, xGnP-supported Pd-Au catalysts demonstrate moderate resistance to poisoning by sulfide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 179, 31 May 2017, Pages 265-273
Journal: Separation and Purification Technology - Volume 179, 31 May 2017, Pages 265-273
نویسندگان
Christopher A. Crock, Reyhan Åengür-TaÅdemir, Ä°smail Koyuncu, Volodymyr V. Tarabara,