| 离子交换纤维的交换动力学研究 |
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| 引用本文： | 陈励权,杨更亮,郑重,张锦,丁克娇. 离子交换纤维的交换动力学研究[J]. 化学学报, 1994, 52(2): 116-121 |
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| 作者姓名： | 陈励权 杨更亮 郑重 张锦 丁克娇 |
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| 作者单位： | 兰州大学现代物理系 |
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| 摘 要： | 本文研究了VS-1型强酸性阳离子交换纤维的交换动力学.在有限浴条件下,用放射性示踪法,研究了温度,搅拌速度,溶液浓度及pH 值对该离子交换纤维的异相同位素交换反应的影响.并推导出离子交换纤维的交换动力学方程,计算出不同条件下的粒内扩散系数D及液膜中的传输系数D/δ.从机理上明确了交换纤维的交换反应速率远比球形树脂快的原因
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| 关 键 词： | 动力学 示踪法 同位素交换 钆 离子交换纤维 聚乙烯酸 |
A study on the ion exchange kinetics of an ion exchange fiber |
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| CHEN LIQUAN,YANG GENGLIANG,ZHENG ZHONG,ZHANG JIN,DING KEJIAO. A study on the ion exchange kinetics of an ion exchange fiber[J]. Acta Chimica Sinica, 1994, 52(2): 116-121 |
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| Authors: | CHEN LIQUAN YANG GENGLIANG ZHENG ZHONG ZHANG JIN DING KEJIAO |
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| Abstract: | The ion exchange kinetics of VS-1 cation exchange fiber was studied. Under finite solution vol. (FSV), not only the effect of temperature, stirring speed, concentration and pH value of the solution on the heterophase isotope exchange of fiber was investigate, but the anal. solns. of the exchange equation were also obtained. By use of these solns., the intraparticle diffusion coefficients D and the film transmitting coefficients D/d under different conditions were calculated, and the reason that the ion exchange rate of fiber is faster than that of spherical resins was given with a proposed mechanism. |
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| Keywords: | DYNAMICS TRACE METHODS ISOTOPE EXCHANGE GADOLINIUM ION-EXCHANGE FIBRES |
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