Rapid synthesis of well-ordered mesoporous silica from sodium silicate

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• 作者：Yun-yu Zhou^b ; Xiao-xuan Li^a ; ^b ; ¹ ; ^{lixiaoxuan_jn@yahoo.com} ; Zheng-xing Chen^a ; ^b ; ^{chenzx_jn@yahoo.cn}
• 关键词：Mesoporous silica ; Well-ordered ; Sodium silicate ; Cetyl trimethyl ammonium bromide
• 刊名：Powder Technology
• 出版年：2012
• 期刊代码：144_00325910
• 类别：et
• 出版时间：August, 2012
• 卷：226
• 期：Complete
• 页码：239-245
• 文件大小：2133 K

摘要

A rapid synthesis method of well-ordered mesoporous silica with a narrow pore size distribution (2-3 nm) was described. The sodium silicate and cetyl trimethyl ammonium bromide (CTAB) were used as a silica source and a template, respectively. And the effects of synthesis conditions on the structure of mesoporous silica were also investigated. Mild acidic medium is helpful to synthesize the well-ordered mesoporous silica, and a relative higher weight ratio of CTAB/sodium silicate (1.5/5.0) is necessary. Moreover, a short aging time (8 h) and an appropriate temperature (about 20 掳C) are beneficial to obtain the mesoporous silica with a narrow pore size distribution.