کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
64291 | 48316 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of mesoporous MCM-48 molecular sieves of high quality in a fluorine-containing system
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Mesoporous MCM-48 molecular sieves were synthesized in a fluorine-containing system using tetraethylorthosilicate (TEOS) as silica source and cetyltrimethylammonium bromide (CTAB) as template. To investigate the influence of various factors for synthesis on the structure and properties of the MCM-48 molecular sieves obtained, they were characterized by X-ray diffraction (XRD), N2 adsorption-desorption and transmission electron microscopy (TEM). The results showed that under the optimal conditions, i.e. a CTAB/Si ratio of 0.65 and crystallization at 393 K for 24 h, the as-synthesized MCM-48 exhibits high crystallinity with a specific surface area of 1305 m2/g and an average pore size of 2.416 nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fuel Chemistry and Technology - Volume 40, Issue 5, May 2012, Pages 564-568
Journal: Journal of Fuel Chemistry and Technology - Volume 40, Issue 5, May 2012, Pages 564-568