کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5148524 1497372 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A dehydrogenation mechanism through substitution of H by D in LiBH4-MgD2 mixture
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
A dehydrogenation mechanism through substitution of H by D in LiBH4-MgD2 mixture
چکیده انگلیسی
In this work, a new substitution mechanism was proposed to describe the dehydrogenation of the hand-mixed LiBH4-MgD2 mixture. Above the melting point of LiBH4, the free D atoms originated from the decomposition of MgD2 would replace the H atoms of liquid LiBH4, leading to the formation of BD bond, and major release of H2 and HD other than D2 gas. The hydrogen substitution mechanism would play the role above the melting point of LiBH4. Similar hydrogen substitution effect was found in the LiBH4-VD2 mixture, not in the NaBH4-MgD2 mixture. Due to the substitution mechanism, the dehydrogenation kinetics of MgD2 in the LiBH4-MgD2 mixture is enhanced, which is contrary to the retarding effect due to hydrogen exchange mechanism previously proposed in the ball-milled LiBH4-MgD2 composite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 5, 2 February 2017, Pages 3130-3135
نویسندگان
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