کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6636420 461130 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of polyvinylidene fluoride-nickel hollow fiber catalytic membranes for hydrogen generation from sodium borohydride
ترجمه فارسی عنوان
آماده سازی غشای کاتالیستی توخالی فلوئورید نیکل برای تولید هیدروژن از بورو هیدرید سدیم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Polyvinylidene fluoride hollow fiber catalytic membranes (CMs) are prepared by in situ reduction of nickel salt with sodium borohydride (NaBH4). The CMs and their membrane modules are both used for hydrogen generation from alkaline NaBH4 solution. Characterization of this nickel-based catalytic membrane is carried out by using various techniques, such as scanning electronic microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The rate of hydrogen generation from catalytic hydrolysis of alkaline NaBH4 solution is determined by varying the temperature, concentration of NaBH4 and sodium hydroxide (NaOH), and content of catalyst. In general, the rate of hydrogen generation is about 388.8 mL min−1 m−2 CMs in 20 mL of 1.0 wt.% NaBH4 and 0.5 wt.% NaOH aqueous solution at 30 °C. It can be efficiently cycled and reused more than six times without significant loss of the catalytic activity. The optimum treated conditions for CMs are 20 wt.% NaOH, 0.2 M NiCl2, and 1 M NaBH4 aqueous solution. The activation energy of NaBH4 hydrolysis reaction is noticed about 55.3 kJ mol−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 140, 15 January 2015, Pages 685-692
نویسندگان
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