کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
57443 | 47119 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid-state 51V NMR and its potentiality in investigation of vanadia systems with paramagnetic centres
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
In this article we will discuss the potentiality of solid-state 51V NMR technique to characterize heterogeneous catalysts containing paramagnetic cations located on the surface or incorporated in the bulk of heterogeneous catalysts. 51V NMR data for a number of 3d and rare earth vanadates, where paramagnetic effects are caused by the presence of paramagnetic cations, are considered. We also summarize results available for vanadium bronzes, where some vanadium is in a paramagnetic V4+ state, and for some vanadium compounds, where closely spaced paramagnetic centers form diamagnetic pairs. The comprehensive 51V chemical shift scale (database) for paramagnetic solids was compiled.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 142, Issues 3–4, 30 April 2009, Pages 220–226
Journal: Catalysis Today - Volume 142, Issues 3–4, 30 April 2009, Pages 220–226
نویسندگان
Aleksandr A. Shubin, Dzhalil F. Khabibulin, Olga B. Lapina,