| 高铝沸石的钙离子交换动力学研究 |
| A Study on the Kinetics of Calcium Ion Exchange with High Aluminum Zeolite |
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| 摘要: |
| 关键词: 洗涤剂 沸石 钙离子交换速率 Body-Reichenberg扩散方程 |
| 基金项目: |
| 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. |
| Keywords: detergent zeolites calcium ion exchange rates Body-Reichenberg diffusion equation |
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| 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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