摘要
以硝酸为氧化剂,研究了不同浓度硝酸溶液对不同用量SBA-15前驱体中模板剂的脱除效果。产物结构和形貌采用X射线衍射、Fourier红外光谱、透射电镜、N2吸附-脱附等手段进行表征。结果表明:用2.0mol/LHNO3对模板剂进行氧化脱除,脱除率达到82.5%;分子筛无机骨架结构保持完好,与传统高温焙烧相比,产物具有较大的孔径。
The effect of HNO3 concentration on removal efficiency of template in SBA-15 precursors was investigated. The characteristics of the structure and morphology of the SBA-15 samples were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and nitrogen adsorption desorption analysis. The results show that the organic template can be efficiently removed using 2.0 mol/L HNO3, the removing ratio of templates of SBA-15 is 82.5% , the highly ordered mesostructures of inorganic frameworks are retained after the template being removed, the HNO3- treated samples showed larger pores than traditionally calcined samples.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2009年第4期704-708,共5页
Bulletin of the Chinese Ceramic Society
基金
安徽科技学院科研基金(ZRC/200686)资助項目
