| 硅酸及其盐的研究——ⅩⅤⅢ.硅溶胶胶粒的生长速度 |
| STUDIES ON SILICIC ACID AND ITS SALTS——X VIII. RATE OF GROWTH OF CQLLOIDAL PARTICLES OF SILICAS OLS |
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| 摘要: 为弄清各种影响因素对硅溶胶胶粒生长的作用,实验测定了胶粒自发生长速度与温度、pH和胶粒粒径等之间的关系,得到了复杂的胶粒生长过程的一些信息。并根据本实验室提出的硅酸聚合理论推导了胶粒生长速度公式,用该式推出的结果与实验所得结果基本符合,说明该式能较正确地反映胶粒生长规律,因而在哇溶胶实际生产中有一定的参考价值。 |
| 关键词: 硅酸 硅溶胶胶粒 |
| 基金项目: 中国科学院科学基金资助项目 |
| Abstract: In order to find out the effect of various factors on growth of the particles of silica sols,the relationship of the rate of spontaneous increase in size of colloidal particles with temperature,pH and particle size has been determined and the information of complicated process of growth of colloidal particle has also been obtained . According to the theory of polymerization of silicic acid proposed previously,an equation has been derived to express the rate of growth of the colloidal particles. It may be written as VD=kD·10-865/T·(r2+56.4rD-126D2)(r+30+5D)/D8r(r2+126D2)
in which VD is the rate of growth of particle;kD,the rate constant;D,diameter of colloidal particle;r,SiO2/Na2O mol ratio and T,the absolute temperature.It is found that this equation may serve as a reference in the process of practical production of silica sols. |
| Keywords: Silicic acid particles of Silica sol |
| 投稿时间：1985-01-29 |
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| 王金晞,陈荣三,郭腊梅,柳海澄,项小宇,戴安邦.硅酸及其盐的研究——ⅩⅤⅢ.硅溶胶胶粒的生长速度[J].无机化学学报,1985,1(1):67-73. |
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