摘要
用酸性硫脲溶液从载钯Ｐ－９５０哌啶树脂解吸钯的动力学研究结果表明，该解吸过程的动力学遵循Ｂｏｙｄ液膜扩散方程，解吸钯的速率随盐酸浓度的增加而下降；当温度升高时，解吸速率增加；提高硫脲浓度，有利于钯的解吸。实验测得的液膜扩散系数Ｋ＝７．３０×１０－２ｓ－１，解吸表观活化能Ｅａ＝１９．０３ｋＪ／ｍｏｌ。
Kinetics of palladium desorption from a new type resin (P 950) in acidic thiourea solution was investigated. The experimental results demonstrated that the desorption of palladium thiourea complex from the resin can be described by Boyds diffusion equation of liquid film. The desorption rate of palladium reduced remarkably with the increase of HCl concentration; the increase of thiourea concentration and temperature accelerated the desorption of palladium- thiourea complex. The distribution coefficent of the desorption K =7.30×10 -2 s -1 and the apparent activation energy of the desorption E a=19.03 kJ/mol were obtained based on the experimental results.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1997年第3期31-33,共3页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金
