کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10247997 | 49175 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The structure and morphology control of mesoporous silica under acidic conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The structure and morphology control of mesoporous silica under acidic conditions The structure and morphology control of mesoporous silica under acidic conditions](/preview/png/10247997.png)
چکیده انگلیسی
The synthesis and crystallization mechanism of various mesoporous molecular sieves with varying morphology have been studied by the methods such as X-ray diffraction (XRD), scanning-electron microscope (SEM), elemental analyses and N2 adsorption-desorption. By adjustment of the synthesis conditions, two types of mesoporous materials with highly resolved XRD patterns and particular morphologies were obtained using cetyltriethylammonium bromide (CTEABr) in the presence of HCl. The g value of lyotropic crystal mesophases was decreased with heating, which led to formation of larger curvature mesophases. The large g value lyotropic crystal mesophases were formed with increase in the surfactant concentration and with decrease in the Si/surfactant ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 85, Issue 3, 7 November 2005, Pages 207-218
Journal: Microporous and Mesoporous Materials - Volume 85, Issue 3, 7 November 2005, Pages 207-218
نویسندگان
Shunai Che, Yasuhiro Sakamoto, Osamu Terasaki, Takashi Tatsumi,