【摘要】 硅灰石与盐酸快速反应制备出沉淀产物、实验产物和溶胶产物 3种无定形SiO2 ,3种产物的比表面积分别在2 0 0 ,40 0和 450m2 / g左右。实验所得 3种产品都存在着纳米颗粒 ,粒径主要分布在 2 0nm～ 5μm之间 ,溶胶产物和实验产物的大颗粒内有 2nm左右的蠕虫状微孔结构 ,而沉淀产物没有此结构 ,并对 3种产物性质进行了对比研究。更多还原

【Abstract】 Three types of amorphous SiO 2(sediment product,experimental product and Ludox product)are prepared from quick speed reaction between wollastonite and hydrochloric acid.The specific area of sediment product,experimental product and Ludox product is 200,400,450m 2/g respectively.Three types products all are nano particle and most of particle diameter is 20nm～5μm.The experimental product and the Ludox products large size particles have worm structure of pore diameter 1～2nm,but the sediment product has not.And the characteristics of the three types amorphous SiO 2 are studied.更多还原