| 改性层状结晶硅酸钠对钙镁离子交换的动力学研究 |
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| 引用本文： | 耿卫东,杨雪静,杨亚玲.改性层状结晶硅酸钠对钙镁离子交换的动力学研究[J].无机盐工业,2011,43(2). |
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| 作者姓名： | 耿卫东 杨雪静 杨亚玲 |
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| 作者单位： | 1. 昆明市生产力促进中心,云南昆明,650021
2. 昆明理工大学 |
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| 基金项目： | 国家自然科学基金项目(20862011); 云南省教育厅重点项目(2007301) |
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| 摘 要： | 改性层状结晶硅酸钠(Al-SKS-6)是一种通过层状结晶硅酸钠(SKS-6)改性的性能优良的洗衣粉助剂。对其进行合成并表征,考察了pH、温度和时间对钙镁交换能力的影响及动力学研究。当pH在10左右时,钙离子和镁离子交换能力达到最大,分别为352 mg/g和405 mg/g,可满足洗衣粉的实际要求。Al-SKS-6对钙镁离子的交换是一个快速交换过程,在5 min时,钙镁离子交换能力可达到30 min时的90%,10 min基本可以达到交换平衡,交换过程符合二级动力学方程,且随着温度的升高,Al-SKS-6对钙镁离子交换能力增大。
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| 关 键 词： | 改性层状结晶硅酸钠 钙镁离子 动力学 |
Study on exchange kinetics of layered modified sodium silicate crystal to Ca2+/Mg2+ |
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| Geng Weidong,Yang Xuejing,Yang Yaling.Study on exchange kinetics of layered modified sodium silicate crystal to Ca2+/Mg2+[J].Inorganic Chemicals Industry,2011,43(2). |
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| Authors: | Geng Weidong Yang Xuejing Yang Yaling |
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| Affiliation: | Geng Weidong1,Yang Xuejing2,Yang Yaling2(1.Kunming Productivity Promotion Center,Kunming 650021,China,2.Kunming University of Science and Technology) |
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| Abstract: | Layered modified sodium silicate crystal(Al-SKS-6) is a kind of excellent detergent additive made from modifying layered sodium silicate crystal(SKS-6).Al-SKS-6 was synthesized and characterized.Effects of pH,tempe-rature,and time on Ca2+/Mg2+ exchange property of Al-SKS-6 were investigated and kinetics thereof was studied.Exchange properties of Ca2+ and Mg2+ reached 352 mg/g and 405 mg/g respectively,which could satisfy the practical requirement of detergent when pH was about 10.Process of Al-SKS-6 exchang... |
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| Keywords: | layered modified sodium silicate crystal Ca2 /Mg2 kinetics |
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