Au(I)、Ag(I)、Cu(I)氰合离子在大孔强碱性阴离子交换树脂中的传质研究  

Study on the Mass Transfer of Au(Ⅰ), Ag(Ⅰ), Cu(Ⅰ) Cyanide Ion in Macrorecticular Strong-basic Anion Ion Exchange Resin

作　　者：徐前永[1] 邱陵[2] 

机构地区：[1]西北核技术研究所 [2]华南师范大学化学系

出　　处：《离子交换与吸附》1989年第6期431-437,共7页Ion Exchange and Adsorption

摘　　要：测定了不同温度下Au(Ⅰ)、Ag(Ⅰ)、Cu(Ⅰ)氰合离子分别在大孔强碱性苯乙烯系CN、Cl、OH型离子交换树脂中的内扩散系数和扩散活化能。从结果得出,氰合离子在树脂相中扩散传质异常缓慢并非由于过高的活化能,而可能是由于过低的活化熵所致。The intraparticle diffusion coefficients and diffusion activation energy of Au(Ⅰ), Ag(Ⅰ), Cu(Ⅰ)-cyanide ions diffusing in CN, Cl, OH-type polystyrene macrorecticular strong basic ion exchange resin have been determined. It is shown from experimental results that the anomalous slowness in mass-transfer of Au(Ⅰ), Ag(Ⅰ), Cu(Ⅰ)-cyanide in ion exchange resin is not due to the exceedingly high activation energy,but probably due to the extraordinary low activation entropy.

关 键 词：金 银 铜 氰合离子 传质 大孔树脂 

分 类 号：O614.123[理学—无机化学]