کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5420830 1395473 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation on the Beckmann rearrangement reaction catalyzed by porous solids: MAS NMR and theoretical calculations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Investigation on the Beckmann rearrangement reaction catalyzed by porous solids: MAS NMR and theoretical calculations
چکیده انگلیسی
In the last years, 'in situ' solid-state NMR has been applied to investigate the Beckmann rearrangement of oximes into amides using zeolites and mesoporous materials of different structure containing Brønsted acids or silanol groups as active sites. DFT methods have been applied to model the geometry of the complexes resulting from adsorption of reactants, reaction intermediates and products on clusters representing the zeolite centers, and their 15N and 13C NMR chemical shift calculated theoretically. This article reviews the results reported in the bibliography on the Beckmann rearrangement of various oximes (acetophenone oxime, cyclohexanone oxime and cyclododecanone oxime) mainly using 'in situ' 15N NMR spectroscopy and theoretical calculations, and are compared with those obtained by 'in situ' infrared spectroscopy. The combination of experiment and theory has been shown to be very useful for the interpretation of the NMR spectra and the identification of the species present at different reaction temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Nuclear Magnetic Resonance - Volume 35, Issue 2, April 2009, Pages 120-129
نویسندگان
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