کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1484741 991642 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of silica microspheres coated with V2O5 xerogel and V2O5/WO3 composite xerogel via adapted Stöber process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Preparation of silica microspheres coated with V2O5 xerogel and V2O5/WO3 composite xerogel via adapted Stöber process
چکیده انگلیسی
In the present study, we have synthesized spherical silica particles covered with either layered V2O5 xerogel or V2O5/WO3 mixed xerogel via an adapted Stöber method using an ammonia solution of methyltriethoxysilane (MTES). The SEM images revealed the presence of a lamellar V2O5 xerogel layer coating the silica particles, as evidenced by the (0 0 1) diffraction lines. Both materials have voltammetric behavior that is quite similar to that of the V2O5 xerogel. The catalytic activity of the silica particles coated with the V2O5/WO3 mixed xerogel was evaluated in the epoxidation of styrene using iodosylbenzene as an oxidant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 30, 15 July 2008, Pages 3548-3553
نویسندگان
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