کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
67789 48494 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of the reaction mechanism of methylpyrazine ammoxidation on vanadia–titania catalyst by FTIR in situ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Investigation of the reaction mechanism of methylpyrazine ammoxidation on vanadia–titania catalyst by FTIR in situ
چکیده انگلیسی

The mechanism of methylpyrazine ammoxidation on a vanadia–titania catalyst has been studied by in situ FTIR spectroscopy. The structure of surface intermediates has been identified and the sequence of their transformation in the temperature range of 150–230 °C has been ascertained. The interaction of methylpyrazine with catalyst surface includes a consecutive transformation of coordinatively bound methylpyrazine into oxygenated surface compounds, viz., an aldehyde-like complex and an asymmetrical carboxylate. The main reaction product, amidopyrazine, is formed through the interaction of the surface oxyintermediates with adsorbed ammonia species.

The mechanism of methylpyrazine ammoxidation on a vanadia–titania catalyst has been studied by in situ FTIR spectroscopy. The structure of surface intermediates has been identified and the sequence of their transformation in the temperature range of 150–230 °C has been ascertained. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 269, Issues 1–2, 18 May 2007, Pages 240–245
نویسندگان
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