کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57616 47125 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Liquid phase photooxidation of alcohol over niobium oxide without solvents
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Liquid phase photooxidation of alcohol over niobium oxide without solvents
چکیده انگلیسی

Photooxidation of alcohols without solvents in the presence of O2 takes place at the atmospheric pressure and room temperature over niobium oxide. From the results of photooxidation of 1-pentanol over niobium oxides calcined at various temperatures, we judged that niobium oxide calcined at 773 K exhibits the highest activity and niobium oxides calcined at ≥873 K shows the higher selectivity to partial oxidation products than those calcined at ≤773 K. The reaction activity correlates to the BET specific surface area and crystallinity drawn from BET, TG-DTA, XRD and laser Raman measurements. The selectivity to partial oxidation products correlates to the amount of Lewis acid sites from FT-IR spectra of pyridine and NH3 adsorbed niobium oxide catalysts, suggesting that Lewis acid sites play a role as an active site for total oxidation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 120, Issue 2, 15 February 2007, Pages 233–239
نویسندگان
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