کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
77440 | 49167 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fast fabrication of hollow silica spheres with thermally stable nanoporous shells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fast fabrication of hollow silica spheres with thermally stable nanoporous shells Fast fabrication of hollow silica spheres with thermally stable nanoporous shells](/preview/png/77440.png)
چکیده انگلیسی
Tens of micrometer-sized hollow silica spheres with thermally stable nanoporous shells were synthesized within 5 min, followed by a drying and a calcination step. Most of the nanopores could be retained up to 700 °C, and the hollow spherical morphology was remained at least until 950 °C. It is proposed that a fast hydrolysis and condensation of tetraethyl orthosilicate take place around multi-lamellar octylamine vesicles. The morphology of the vesicles is then fixed by a quick gelation process, resulting in hollow organo-silica spheres. After the removal of the template by calcination, nanopores are generated in the hollow shells.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 98, Issues 1–3, 5 January 2007, Pages 41–46
Journal: Microporous and Mesoporous Materials - Volume 98, Issues 1–3, 5 January 2007, Pages 41–46
نویسندگان
Xin Cheng, Shiquan Liu, Lingchao Lu, Xueye Sui, Vera Meynen, Pegie Cool, Etienne F. Vansant, Jianzhuang Jiang,