کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1619579 1005722 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Industrial production of MgH2 and its application
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Industrial production of MgH2 and its application
چکیده انگلیسی

A process for the industrial production of magnesium hydride (MgH2) based on a thermal equilibrium method and its application to portable hydrogen sources is proposed. Mg powders and tablets compressed with mechanically ground Mg ribbons were successfully hydrogenated in a 50-kg-batch furnace. The resultant MgH2 showed a hydrogen yield of around 96% with good reproducibility. The compression ratio of Mg tablets was found to be an important factor in the hydrogenation yield. A hydrolysis technique using citric acid as an additive was employed to generate hydrogen under 373 K. Increasing the concentration of citric acid and the temperature accelerated the hydrolysis reactivity. A hydrogen reactor utilizing hydraulic head pressure was developed. It generated hydrogen continuously for 1 h at a flow rate of 100 ml min−1 with hydrolysis of 5 g of tablet-form MgH2. The conversion yield was around 70%, regardless of the flow rate.

Research highlights▶ Tablet and powder Mg were hydrogenated in a 50 kg batch furnace based on thermal equilibrium method. ▶ Compression of Mg tablet improved the hydrogenation yield. ▶ Hydrolysis of MgH2 using citric acid generated hydrogen under 373 K. ▶ A MgH2-hydrogen reactor utilizing hydraulic head pressure was developed. ▶

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 509, Supplement 2, September 2011, Pages S650–S653
نویسندگان
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