کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1648551 1007560 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low temperature synthesis of mesoporous silicon carbide via magnesiothermic reduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Low temperature synthesis of mesoporous silicon carbide via magnesiothermic reduction
چکیده انگلیسی

Mesoporous silicon carbides (SiC) with high surface areas (above 300 m2/g) have been prepared successfully at a relative low temperature of 650 °C via magnesiothermic reduction of mesoporous silica/carbon (SiO2/C) composites. The physicochemical properties and the structure of the products were characterized by various techniques such as XRD, FT-IR, SEM, TEM and N2 adsorption–desorption isotherm. The experimental results indicate that the obtained SiC materials by this new method have similar structure to corresponding silica matrix templates. It was found that the magnesium (Mg) plays an important role in determining the structure and properties of the final products, which is used as a dual role agent both reducer and catalyst. The formation mechanism of mesoporous SiC has been also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 65, Issue 11, 15 June 2011, Pages 1552–1555
نویسندگان
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