کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1506738 993806 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
VOx doped Al2O3 and AlF3 – A comparison of bulk, surface and catalytic properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
VOx doped Al2O3 and AlF3 – A comparison of bulk, surface and catalytic properties
چکیده انگلیسی

VOx doped aluminium oxides and fluorides with different vanadium contents were prepared by modified sol–gel synthesis techniques. The resulting solid catalysts show an interesting behaviour in the selective oxidative dehydrogenation of propane (ODH). The results of the structural (XRD, MAS NMR, ESR) and surface analysis (BET, Py-PAS, NH3-TPD) combined with temperature programmed isotope exchange experiments (TPIE) demonstrate that the special catalytic properties of the VOx doped aluminium fluorides arise from a host lattice almost free of oxygen and the presence of a very high concentration of medium–strong acid sites.

On VOx doped aluminium fluorides a remarkable behaviour in the oxidative dehydrogenation (ODH) of propane to propene was observed. Up to a vanadium content of 13 mol% the selectivity to the desired product propene is higher than that to the total oxidation products (COx).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 10, Issue 7, July 2008, Pages 873–883
نویسندگان
, , , ,