کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
75884 | 49126 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The synthesis of high surface area cerium oxide and cerium oxide/silica nanocomposites by the silica aquagel-confined co-precipitation technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
This paper describes the synthesis of high surface area cerium oxide and cerium oxide/sílica nanocomposites, by means of silica aquagel-confined co-precipitation (SACOP). The obtained cerium oxide structures have surface areas of up to 200 m2 g−1 and are made up of aggregates of nanosized particles (2–5 nm). By modifying certain specific synthetic parameters [the type of acid (HNO3 or HCl), the silica/acid ratio (Si/H+) and the cerium concentration (Ce/Si) in the synthesis suspension, the aquagel ageing time and the silica removal procedure] we were able to establish the optimum parameters for fabricating high surface area CeO2 and to shed light on the different mechanisms involved in the novel SACOP technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 127, Issue 3, February 2010, Pages 198–204
Journal: Microporous and Mesoporous Materials - Volume 127, Issue 3, February 2010, Pages 198–204
نویسندگان
Irene López, Teresa Valdés-Solís, Gregorio Marbán,