A Study on the Preparation of Copper Salt by Oxidant of Sodium Persulfate

• Main Authors: Jiong-Yuan Wang, 王炯元
• Other Authors: 蔡德華
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/k295m4

碩士 === 國立臺北科技大學 === 化學工程研究所 === 95 === In this research used strong oxidant, sodium persulfate, to prepare the cupric oxide. The experiment mainly divided into two steps, firstly we must find out the optimum concentration of sodium persulfate solution to dissolve the maximum quantity of copper, this step carried on different concentration of sodium persulfate solution, fixed rate of stir and the same temperature. In this condition, the reaction to produced cupric sulfate solution from added equivalent copper powder. Each period of time we took the solution to analyze the concentration of Cu2+ in order to plot the solubility curve. So we can get the optimum concentration of sodium persulfate solution. Secondly we can use this concentration to prepare the cupric sulfate solution, and then we added the different concentration of sodium persulfate to prepare the cupric hydroxide or cupric oxide, then we can observe the change of cupric oxide yield rate by changing temperature and concentration of cupric hydroxide. Finally we can find out the optimum operation condition to get the optimum yield and maximum quantity. And we can find cupric sulfate which is produced by 0.5N sodium persulfate(50mL) adds into 1N sodium hydroxide (50mL) to be allowed to obtain cupric hydroxide of the best yield in 10℃. Moreover under the room temperature, we can find cupric sulfate which is produced by 0.5N sodium persulfate (50mL) adds into 10N sodium hydroxide(50mL) to be allowed to obtain cupric oxide of the best yield. But the hightest purity is mixture with cupric sulfate which is produced by 0.75N sodium persulfate (50mL)and 20N sodium hydroxide(50mL) in 60℃.