Preparation of low surface area SiO2 microsphere from wheat husk ash with a facile precipitation process
Preparation of low surface area SiO2 microsphere from wheat husk ash with a facile precipitation process
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采用简易沉淀法从麦壳灰中制备低表面积 SiO2 微球
DOI：
10.1016/j.matlet.2015.04.134
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发表时间：
2015-10
影响因子：
3
通讯作者：
Zhongsheng Wen
中科院分区：
文献类型：
--
作者：
Hongliang Sun;Zelin Luo;Juncai Sun;Zhongsheng Wen
以麦壳灰为原料，采用简便的沉淀法制备了粒径分布窄的低比表面积SiO2微球，该过程依次进行硅酸钠提取、硅酸钠提取物用蒸馏水和乙醇稀释、HCl溶液沉淀二氧化硅和煅烧四个步骤。所得二氧化硅微球的粒径分布和比表面积主要受提取物、水和乙醇的体积比以及HCl溶液的滴速影响。在提取物/水/乙醇体积比为1:1.5:0.5、HCl溶液滴速为3 mL/min的优化合成条件下，合成的具有内部介孔的SiO2微球具有非晶结构，直径约为227 nm，比表面积为8.23 m2/g。
Low surface area SiO2microspheres with narrow size distribution are prepared from wheat husk ash with a facile precipitation process, in which four steps including the extraction of sodium silicate, the dilution of sodium silicate extract with distilled water and ethanol, the precipitation of silica with HCl solution and calcination process are involved orderly. The particle size distribution and the specific surface area of the resulted silica microspheres are affected predominantly by the volume ratio of extract, water and ethanol and the dripping rate of HCl solution. The synthesized SiO2microspheres with internal mesopores have an amorphous structure with diameters of approximately 227 nm and a specific surface area of 8.23 m2/g under the optimized synthesis conditions with a volume ratio of 1:1.5:0.5 for extract/water /ethanol and HCl solution dripping rate of 3 mL/min.
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影响因子：
11.4
作者：
Dawei Li;Dengyu Chen;Xifeng Zhu
通讯作者：
Dawei Li;Dengyu Chen;Xifeng Zhu
影响因子：
11.4
作者：
Long Lin;S. Zhai;Zuoyi Xiao;Na Liu;Yu Song;B. Zhai;Qing-da An
通讯作者：
Long Lin;S. Zhai;Zuoyi Xiao;Na Liu;Yu Song;B. Zhai;Qing-da An
影响因子：
3
作者：
Li, Dawei;Zhu, Xifeng
通讯作者：
Zhu, Xifeng
影响因子：
5.2
作者：
Lu, Ping;Hsieh, You-Lo
通讯作者：
Hsieh, You-Lo
DOI：
10.1016/s0927-7757(01)00683-5
发表时间：
2002-02
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子：
--
作者：
S. Park;Ki Do Kim;H. Kim
通讯作者：
S. Park;Ki Do Kim;H. Kim