摘要
以水玻璃为原料 ,用溶胶 -凝胶法制备 Si O2 粉末 .研究了凝胶熟化条件对最终所得 Si O2 粉末孔结构性能的影响 ,并分析讨论了熟化过程影响 Si O2 粉末孔结构的作用机理 .结果表明 :在一定条件下提高熟化介质的 p H值和延长熟化时间均可使 Si O2 粉末的比表面积和总孔体积减小 ,孔径分布向大孔方向移动 .
Silica powders were prepared by sol gel method from water glass. The effect of aging conditions of silica hydrogel on the pore structure properties of the silica powders obtained was studied, and the mechanism by which aging process affects the pore structure of silica powders was discussed. The results show that under the given conditions raising the pH value of aging medium and prolonging the time of aging can cause the decrease in specific surface areas and total pore volumes of the silica powders and at the same time the shift of pore size distributions to larger size.
出处
《郑州大学学报（自然科学版）》
CAS
2000年第2期70-72,共3页
Journal of Zhengzhou University (Natural Science)
基金
河南省科技攻关项目!(NO.9715 0 0 0 7)
