کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7723038 | 1497527 | 2013 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic measurements of hydrogen reaction with LaNi5âxSnx alloys
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The study focuses on the reaction between hydrogen gas and LaNi5âxSnx alloys, where 0 â¤Â x â¤Â 0.5, in broad temperature and pressure ranges. It was performed by means of dynamic volumetric techniques using specific equipment developed at our laboratory. The substitution of Ni by Sn lowers the system equilibrium pressure and increases the hydrogen absorption reaction rate. Reaction pressures at room temperature range from 8 kPa (x = 0.5) to 250 kPa (x = 0). At 415 K the reaction pressure is within the range from 200 kPa to 4000 kPa for x = 0.5 and 0, respectively. The measured characteristic absorption time at 750 kPa for LaNi5 is around 1 min, while it remains below 2.5 s for LaNi4.5Sn0.5. The maximum H concentration goes from 1.3 wt.% for LaNi5 down to 0.95 wt.% for LaNi4.5Sn0.5. These results are useful to identify a metal system where the hydrogen interaction equilibrium properties can be tuned in a wide pressure range by choosing the chemical composition and the process temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 18, 18 June 2013, Pages 7335-7343
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 18, 18 June 2013, Pages 7335-7343
نویسندگان
E.M. Borzone, A. Baruj, M.V. Blanco, G.O. Meyer,