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Cu2+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2.10×104 Pa 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 Cu2+ 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 Cu2+ 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 \linebreak21.76 kJ/mol in the temperature range from 25℃ to 70℃ under the oxygen partial pressure of 2.10×104 Pa. The dissolution rate equation of Cu in BMIMBF4 was obtained.
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