| 高铝沸石的钙离子交换动力学研究 |
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| 引用本文： | 王仰东,傅乐峰,董家禄,须沁华.高铝沸石的钙离子交换动力学研究[J].无机化学学报,2002,18(11):1151-1155. |
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| 作者姓名： | 王仰东 傅乐峰 董家禄 须沁华 |
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| 作者单位： | 南京大学化学化工学院,南京,210093 |
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| 基金项目： | 国家(863)资助项目(No.715-004-0120)。 |
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| 摘 要： | 由于含磷洗涤剂的使用所带来的环境危害日益严重，高铝沸石作为洗涤剂助剂三聚磷酸钠的替代品已获得广泛的应用。作为洗涤剂助剂，沸石的Ca２＋、Mg２＋离子交换性能是影响其助洗效果的主要因素之一犤１，２犦。但目前对沸石的离子交换性质的研究多集中在离子交换平衡等温线的研究犤３～６犦，涉及沸石离子交换动力学的研究却鲜有报道。作为硬水的软化剂，洗涤剂用沸石对Ca２＋、Mg２＋离子的交换速率大小对洗涤效果的意义更为重要犤１犦。沸石的离子交换过程包括离子由溶液中扩散到沸石表面，再由沸石表面扩散到沸石孔道中的离子位等步骤…
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| 关 键 词： | 洗涤剂 沸石 钙离子交换速率 Body-Reichenberg扩散方程 |
| 修稿时间： | 2002年6月5日 |
A Study on the Kinetics of Calcium Ion Exchange with High Aluminum Zeolite |
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| WANG Yang-Don,FU Le-Feng,DONG Jia-Lu and XU Qin-Hua.A Study on the Kinetics of Calcium Ion Exchange with High Aluminum Zeolite[J].Chinese Journal of Inorganic Chemistry,2002,18(11):1151-1155. |
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| Authors: | WANG Yang-Don FU Le-Feng DONG Jia-Lu and XU Qin-Hua |
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| Institution: | School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093,School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093,School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 |
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| Abstract: | Exchange rates of calcium ion with high aluminum zeolites used in detergent, such as NaA, MAP and MAX zeolites, were measured by using a improved calcium ion selective electrode method (ISE). The calcium exchange kinetics of zeolites was studies by using Body-Reichenberg diffusion equation. The effects of the particle size, pore structure of zeolites and the ion exchange temperature on the calcium ion exchange kinetics were also investigated. Results showed that the diffusion coefficients at room temperature were 2.33×10-15m2·s-1, 4.28×10-16m2·s-1 and 7.73×10-17m2·s-1 for zeolite MAX, NaA and MAP, respectively. The activation energy of diffusion was 48kJ·mol-1, 65kJ·mol-1 and 91kJ·mol-1 for zeolite MAX, NaA and MAP, respectively. |
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| Keywords: | detergent zeolites calcium ion exchange rates Body-Reichenberg diffusion equation |
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