کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
674613 1459570 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of alkali metal ion and hydrogen bonds on thermal stability of M[VO(O2)2bpy]·nH2O (M = Li+–Rb+) and Cs[VO(O2)2bpy]·H2O2 complexes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Effect of alkali metal ion and hydrogen bonds on thermal stability of M[VO(O2)2bpy]·nH2O (M = Li+–Rb+) and Cs[VO(O2)2bpy]·H2O2 complexes
چکیده انگلیسی

The compounds M[VO(O2)2bpy]·nH2O (M = Li+–Rb+) and Cs[VO(O2)2bpy]·H2O2 were characterized by thermogravimetry (TG). In the course of TG experiments, performed from 25 up to 550 °C, three main stages of decomposition were observed: (i) dehydration, (ii) releasing of the oxygen molecules and (iii) decomposition of bpy. The final product of decomposition is MVO3, with small amounts of paramagnetic vanadium(IV) species. Volatile products were detected on-line using mass spectrometer. Mechanism of the decomposition is discussed on the basis of crystal structures of complexes. The main role is played by hydrogen bonds involving peroxo ligands and polarising power of alkali metal ions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 514, Issues 1–2, 20 February 2011, Pages 32–36
نویسندگان
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