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Research on preparation of small size nano-silica
Author(s): 
Pages: 302-304,308
Year: Issue:  5
Journal: Science and Technology of Food Industry

Keyword:  稻壳灰 纳米白炭黑 水玻璃浓度 硫酸溶液的滴加速度 粒径;
Abstract: 为了制取极低粒径纳米白炭黑以满足工业应用的要求,采用沉淀法,以稻壳灰为原料,研究白炭黑生成过程中水玻璃浓度和10%硫酸溶液的滴加速度对白炭黑粒径的影响。结果表明,水玻璃浓度为11.8%,10%硫酸溶液滴加速度为14.5mL/min时,产品的粒径为30nm,达到纳米尺寸;红外分析和X射线衍射分析表明,产品为白炭黑;透射电镜分析表明,产品呈颗粒状的单层排列,因而具有较好的分散性。
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