کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9803752 1516472 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
IR characterizations of lithium imide and amide
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
IR characterizations of lithium imide and amide
چکیده انگلیسی
Li2NH was synthesized by decomposing of LiNH2 at 673 K under vacuum. Li2NH absorbed and desorbed 6.0-7.0 wt.% of hydrogen at 573-673 K in the pressure range of 9-0.001 MPa. According to the van't Hoff equation, the standard enthalpy change of the hydride reaction was about −66 kJ/mol H2. The hydrogen absorption and desorption by Li2NH was characterized by infrared spectroscopy. We found that IR bands at 3260 cm−1 and 3315 cm−1 of LiNH2 shift to 3180 cm−1 and 3250  cm−1 in the infrared spectrum of Li2NH. The broad IR bands shapes of the hydrogenated specimen (LiNH2) were related with the smaller crystallite size and/or the increasing crystallite disorder.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 395, Issues 1–2, 31 May 2005, Pages 236-239
نویسندگان
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