| 乙酸对聚硅酸絮凝剂形态分布及转化规律的影响 |
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| 引用本文： | 张琼,许兆义,夏爽,尹承龙.乙酸对聚硅酸絮凝剂形态分布及转化规律的影响[J].北京科技大学学报,2005,27(4):413-417. |
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| 作者姓名： | 张琼 许兆义 夏爽 尹承龙 |
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| 作者单位： | 北京交通大学土建学院,北京,100044 |
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| 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.
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| 关 键 词： | 硅酸聚合 乙酸 聚合 形态分布 形态转化 乙酸 聚硅酸絮凝剂 形态分布与转化 分布及转化 规律 影响 acid species distribution polymerization effect 生根 模式 生长速度 颗粒物 程度 表现 硅酸溶液 速率 酸反应 组分 |
| 收稿时间： | 09 1 2004 12:00AM |
| 修稿时间： | 12 28 2004 12:00AM |
Acetic acid effect on the polymerization and species distribution of polysilicic acid in silicic acid |
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| ZHANG Qiong,XU Zhaoyi,XIA Shuang,YIN Chenglong.Acetic acid effect on the polymerization and species distribution of polysilicic acid in silicic acid[J].Journal of University of Science and Technology Beijing,2005,27(4):413-417. |
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| Authors: | ZHANG Qiong XU Zhaoyi XIA Shuang YIN Chenglong |
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| Abstract: | 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. |
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| Keywords: | islicic acid acetic acid polymerization species distribution species transformation |
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