含镁离子对硅酸溶液胶凝行为的影响  

Effect of Mg2+ Ion on Gelation Behavior of Silicic Acid Solution

作　　者：王平[1,2] 尤润泽 申星梅[1,2] 杨春 Wang Ping;You Runze;Shen Xingmei;Yang Chun(Anhui Provincial Engineering Technology Research Center of Metallurgy Waste Recycling,Anhui University of Technology, Maanshan 243002,China;Anhui Provincial Key Lab of Metallurgy Engineering & Resources Recycling, Anhui University of Technology, Maanshan 243002,China)

机构地区：[1]安徽工业大学冶金废弃物综合利用安徽省工程技术研究中心,安徽马鞍山243002 [2]安徽工业大学冶金工程与资源综合利用安徽省重点实验室,安徽马鞍山243002

出　　处：《山东化工》2019年第17期36-37,41,共3页Shandong Chemical Industry

基　　金：安徽省高校自然科学研究项目(KJ2016A811);安徽省科技计划项目(1606c08220);安徽省冶金固废材料化利用技术创新团队项目

摘　　要：向不含金属离子的硅酸溶液中加入金属镁离子,研究了体系pH值、温度、镁离子浓度对硅酸溶液胶凝时间以及镁离子对胶凝产物基团的影响。结果表明,加入镁离子的硅酸溶液体系胶凝曲线最高点出现在pH值=1.5附近;随体系温度和镁离子浓度的升高,含镁离子硅酸溶液的胶凝时间逐渐缩短;镁离子的加入导致凝胶产物部分红外特征吸收峰强度变弱。After adding Mg2+ ion to silicic acid without metallic ions, effects of pH, temperature and magnesium concentration on gelation time of silicic acid solution were investigated. The effect of Mg2+ ion on its group was also investigated. It shows that the maximum gel time of silicic acid solution after adding Mg 2+ ion occurs at pH=1.50.The gelation time shortened with the increase of temperature and concentration of Mg2+ ion. The intensity of some infrared absorption peaks of gels weakened induced by Mg2+ ion.

关 键 词：硅酸溶液 镁离子 胶凝时间 聚合 

分 类 号：O648[理学—物理化学] X703.5[理学—化学]