کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7705898 | 1497302 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New insights on the mechanism of vapour phase hydrolysis of sodium borohydride in a fed-batch reactor
ترجمه فارسی عنوان
بینش های جدید در مورد مکانیزم هیدرولیز فاز بخار بورو هیدرید سدیم در یک راکتور تغذیه ای
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
بورو هیدرید سدیم، هیدرولیز بخار غیر کاتالیزوری، تولید هیدروژن،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
This study aims to produce H2 from sodium borohydride (NaBH4) and to initiate its hydrolysis at elevated temperature in the absence of a catalyst. Experimental results indicated that the hydrogen generation yield increased up to %99 at 150 °C in the NaBH4 concentration of %5 wt in the acidic medium. It can be concluded that experimental characterization of the by-products is quite important since they affected the reaction mechanism or pathway. When the experiments are carried out under aqueous condition, the primary by- product is sodium metaborate while it is boric acid under acidic condition. It is postulated that by-product boric acid decreased the mass transfer limitation due to its higher solubility that prevents the formation of shell and thus increases the contact area between NaBH4 and vapor. A series of fed-batch reactions were performed to confirm the hypothesis, and the conversions of NaBH4 reached 99% under the acidic condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 23, 7 June 2018, Pages 10734-10740
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 23, 7 June 2018, Pages 10734-10740
نویسندگان
Meryem Sena AkkuÅ, Hatice Begüm Murathan, Derya Ãncel Ãzgür, Gülay Ãzkan, Göksel Ãzkan,