کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1652038 | 1007635 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Short-period synthesis of ordered mesoporous silica SBA-15 using ultrasonic technique Short-period synthesis of ordered mesoporous silica SBA-15 using ultrasonic technique](/preview/png/1652038.png)
Mesoporous silica SBA-15 was synthesized from rice husk ash via the ultrasonic technique in the hydrolysis–condensation stage. The effect of the time period in this stage on the mesoporous silica SBA-15 structure and physical properties was investigated and compared with those of the SBA-15 prepared by the conventional technique. It has been shown that the ultrasonic technique can be successfully applied for the synthesis of mesoporous silica SBA-15 with highly ordered hexagonal pore-arrangement and narrow PSD within the much shorter hydrolysis–condensation period. The SBA-15 products synthesized via the ultrasonic technique for the time period of 3 h have higher specific surface area, total pore volume, and microporosity than those prepared by the conventional technique for the time period of 24 h.
Journal: Materials Letters - Volume 61, Issue 29, December 2007, Pages 5153–5156