在不同氧分压和温度下,研究Cu片在BMIMBF4离子液体中的溶解速率,并测定Cu^2+在BMIMBF4离子液体中的饱和浓度。结果表明,Cu必须有氧存在才能溶解在BMIMBF4离子液体中,且溶解速率随氧分压和温度的增加而加快。根据实验数据得到在25℃~70℃和2.10×10^4Pa的氧分压下,Cu溶解速率的表观活化能为21.76 kJ/mol,并建立Cu在BMIMBF4离子液体中溶解的速率方程。
Dissolution characteristic of Cu in BMIMBF4 ionic liquid under different oxygen partial pressures and temperatures was investigated,and the saturation concentrations of Cu^2+ in BMIMBF4 were also measured. The experimental results showed that Cu can only be dissolved in BMIMBF4 in the presence of oxygen and the dissolution rate of Cu^2+ in BMIMBF4 improved with increase in the oxygen partial pressure and temperature. In addition,according to the experimental data,The value of apparent activation energy was found to be 21.76 kJ/mol in the temperature range from 25℃to 70℃under the oxygen partial pressure of 2.10×10^4 Pa. The dissolution rate equation of Cu in BMIMBF4 was obtained.