摘要
在pH=3.7的HAc-NaAc缓冲体系中,D201×4树脂对钼(Ⅵ)的静态饱和吸附容量为631mg/g.树脂,用4.0mol/LNaOH能定量解吸。测得表观吸附速率常数k298=6.25×10-5s-1。树脂吸附钼(Ⅵ)的行为遵守Freundlich方程。298K时测得吸附反应热效应ΔH=25.5kJ/mol,表观吸附活化能Ea=19.1kJ/mol。树脂功能基RN+(CH3)3Cl-与Mo(Ⅵ)的摩尔比约为1∶2。
The statically saturated adsorption capacity of D201× 4 resin for Mo( Ⅵ ) is 631mg/g· R in the HAc-NaAc medium at pH 3.7. Mo( Ⅵ ) adsorbed on 13201 × 4 resin can be eluted quantitatively by 4.0mol/L NaOH. The adsorption rate constant is k298 = 6.25 × 10^ - 5s^- 1. The adsorption behavior of D201 × 4 resin for Mo( Ⅵ ) is consonant with the Freundlich isotherm. The thermodynamic parameter of adsorption of 13201 x 4 for Mo( Ⅵ ), the enthalpy change AH is 25.5kJ/mol and the apparent adsorption activation energy is 19.1 kJ/mol. Molar ratio of the functional group of 13201 × 4 to Mo( Ⅵ ) is about 1 : 2.
出处
《有色金属》
CSCD
北大核心
2006年第4期29-32,共4页
Nonferrous Metals
基金
浙江省教育厅科研项目(20040551)
浙江省分析测试基金项目(04094)
关键词
冶金技术
钼
吸附
D201×
4树脂
动力学
metallurgical technology
molybdenum( Ⅵ )
adsorption
D201× 4 resin
kinetics