摘要
研究了用大孔交联聚甲基丙烯酸酯吸附剂MET-802从不同浓度的盐酸中吸附AuCl_4的液膜扩散传质问题.结果表明,传质系数K_t与介质的运动粘度v的7.4次方成正比,且液膜厚度σ远大于树脂半径,与Carberry的理论式不符;并提出了可普遍适用的表达K_1和σ的经验式.
The liquid film diffusion mass transfer of adsorption of AuCl4- from hydrochloric acid with various concentrations through the film encompassing macroporous crosslinked polymethacrylate resin MET-802 was studied. The results, deviated from the theoretical formula proposed by James J. Car-berry, show that the mass transfer coefficient Kf is in proportion to v7.4(v is kinematic viscosity) and the thickness of the film a is much larger than the diameter of the resin. The above results are discussed and two general empirical equations for expressing Kf and σ are suggested.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第2期267-270,共4页
Chemical Journal of Chinese Universities
关键词
离子交换
液膜
扩散
传质
Liquid film thickness, Liquid film diffusion, Macroporous adsorption resin
