摘要
针对聚硅酸金属盐絮凝剂因硅酸聚合胶凝而失活的问题,依照Si-Mo比色法的原理,对乙酸存在时的聚硅酸形态及其转化规律进行研究.实验表明:在酸性氛围下,当有乙酸化合物存在时,聚硅酸溶液中的硅酸组分与钼酸反应的速率总是要比不含乙酸时的大得多;溶液中存在的Sia和Sib形态均表现出不同程度的增加.乙酸化合物的存在,能够有效减缓硅酸溶液中聚硅酸颗粒物的生长速度,但聚硅酸的总体形态分布与转化规律的模式并没有因为乙酸的存在而发生根本的改变.
The species distribution and transformation characteristics ofpolysilicic acid in the presence of acetic acid were investigated by chemical Si-Mo assay analysis. The experimental results showed that in the acid condition the polymerization rate decreased in acetic acid media, and the contents of species Sia and Sib were increased. This further indicated that when the acetic acid compound existed it could slow the growth rate of the particles of polysilicic acid, but total species distribution and its transformation model ofpolysilicic acid did not change.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2005年第4期413-417,共5页
Journal of University of Science and Technology Beijing
基金
北京市自然科学基金资助项目(No.2042018)
关键词
硅酸聚合
乙酸
聚合
形态分布
形态转化
islicic acid
acetic acid
polymerization
species distribution
species transformation
