Na~+-UO_2~(2+)二元离子交换体系中树脂体积发生变化时的动力学
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摘要: 提出了Ｎａ￣＋－ＵＯ￣（２＋）＿２二元离子交换体系中树脂体积发生变化时的动边界模型数学表达式；探讨了不同实验条件下Ｎａ￣＋－ＵＯ￣（２＋）＿２离子交换反应机理，计算了扩散系数。结果表明，用此模型处理该体系的交换反应动力学是成功的。Abstract: THE KINETICS OF BINARY SYSTEM WITH CHANGING RESIN VOLUME DURING ION EXCHANGESONG YINJIE；YANG QINGDONG；ZHAOAIMIN（Department of Modern Physics,Lanzhou University，Lanzhou 730000）ABSTRACT A mathematical model the moving boundary mechanism with changimn exchanger volumeduring ion exchange in binary system of is presented．The kinetic data observed on001×7 strong acidic cation exchange resin are treated by the model，the mechanism of ion ex-change reaction and under various experimental conditions is discussed，and the diffusion coefficients are calculated．The conformitv of this model with experimental re-sults is demonstrated.Key words Binary system Moving boundary model Resin volume Diffusion coeffi-Cient
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[1] １ＧｏｐａｌａＲａｏＭ，ＧｕｐｔａＡＫ．ＩｏｎＥｘｃｈａｎｇｅＰｒｏｃｅｓｓｅｓＡｃｃｏｍｐａｎｉｅｄｂｙＩｏｎｉｃＲｅａｃｔｉｏｎｓ．ＣｈｅｍＥｎｇＪ，１９８２，２４：１８ｌ－１９０．２ＳｃｈｍｕｃｋｌｅｒＧ，ＮａｔｉｖＭ，ＧｏｌｄｓｔｅｉｎＳ．ＫｉｎｅｔｉｃｓｏｆＳｈｅｌｌＰｒｏｇｒｅｓｓｉｖｅＲｅａｃｔｉｏｎｓｉｎＩｏｎＥｘｃｈａｎｇｅＲｅｓｉｎｓ，Ｉｎ：ＴｈｅＴｈｅｏｒｙａｎｄＰｒａｃｔｉｃｅｏｆＩｏｎＥｘｃｈａｎｇｅ，Ｃａｍｂｒｉｄｇｅ，１９７６．２５－３０．３ＢｉｓｃｈｏｆｆＫＢ．ＴｈｅＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＤｉｆｆｕｓｉｏｎＣｏｅｆｆｉｃｉｅｎｔｉｎＭｏｖｉｎｇ－ＢｏｕｎｄａｒｙＭｅｄｅｌ．ＣｈｅｍＥｎｇＳｃｉ，１９６３，１８：７１１－７１８．４ＴａｏＺｕｙｉ，ＮｉｕＪｉｎｌｏｎｇ．ＳｈｅｌｌＰｒｏｇｒｅｓｓｉｖｅＭｏｄｅｌＷｉｔｈＣｈａｎｇｉｎｇＢｕｌｋＣｏｎｃｅｎｔｒａｔｉｏｎａｎｄＩｏｎＥｘｃｈａｎｇｅＶｏｌ－ｕｍｅ，ＳｏｌｖｅｎｔＥｘｔＩｏｎＥｘｃｈ，１９９０，８：９９－１１５．５宋胤杰，赵爱民．用三种模型处理二元离子交换动力学的对比研究．核化学与放射化学，１９９４，１６（３）：１５１－１５９．６ＺｈａｏＡｉｍｉｎ，ＴａｏＺｕｙｉ，ＴｏｎｇＷｅｎｇｏｎｇ，ｅｔａｌ．ＳｔｕｄｉｅｓｏｎＩｏｎＥｘｃｈａｎｇｅＥｑｕｉｌｉｂｒｉａａｎｄＫｉｎｅｔｉｃｓⅡ．ＣａｔｉｏｎＥｘｃｈａｎｇｅＫｉｎｅｔｉｃｓ．ＪＲａｄｉｏａｎａｌＮｕｃｌＣｈｅｍ，Ａｒｔｉｃｌｅｓ，１９８７，１１６（１）：４９－６１．７陶祖贻，赵爱民．离子交换平衡及动力学，北京：原子能出版社，１９８９．２１－２４．８赵爱民，宋胤杰．三元离子交换动力学的研究．核化学与放射化学，１９９４，１６（４）：２０５－２１２．９ＴａｏＺｕｙｉ，ＺｈａｏＡｉｍｉｎ，ＴｏｎｇＷｅｎｇｏｎｇ，ｅｔａｌ．ＳｔｕｄｉｅｓｏｎＩｏｎＥｘｃｈａｎｇｅＥｑｕｉｌｉｂｒｉａａｎｄＫｉｎｅｔｉｃｓＩ．Ｎａ￣＋－Ｈ￣＋ＣａｔｉｏｎＥｘｃｈａｎｇｅＥｑｕｉｌｉｂｒｉｕｍａｎｄＫｉｎｅｔｉｃｓ．ＪＲａｄｉｏａｎａｌＮｕｃｌＣｈｅｍ，Ａｒｔｉｃｌｅｓ，１９８７，１１６（１）：３５－４７．
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