电解法制备氧化亚铜过程中添加剂的作用

Effect of additives on electrolytic manufacture of cuprous oxide

研究了NH2 OH·H2 O、蔗糖、葡萄糖酸钙等添加剂在电解法制备氧化亚铜过程中的作用机理及对氧化亚铜产品质量的影响。结果表明 ,NH2 OH·H2 O、蔗糖能有效地抑制电解过程中CuO的生成 ,但不能防止阴极区海绵状金属铜粉的生成 ;而葡萄糖酸钙不仅能有效地阻止阴极区海绵状金属铜粉的生成 ,并且可以降低产品中CuO含量。因此 ,NH2 OH·H2 O、蔗糖只能作为一种辅助添加剂 ,而葡萄糖酸钙的作用较上述两种添加剂的效果好 ,可作为独立的添加剂使用 ,是一种较理想的添加剂。

The effects of additives such as NH 2OH·H 2O, sucrose, calcium gluconate on the qualities of cuprous oxide and the action mechanism in the process of electrolysis were studied. The results suggested that NH 2OH·H 2O and sucrose can inhibit the deposition of CuO, but can not inhibit the deposition of copper in the electrolysis process. Calcium gluconate can not only effectively prevent the deposition of spongy copper powder on the cathodes, but also reduce the CuO content in the Cu 2O product. So NH 2OH·H 2O and sucrose can be used as auxiliary additives in the electrolysis process. Calcium gluconate is a kink of ideal additive in the process of electrolysis to produce cuprous oxide, and can be used as an independent additive in the electrolysis process.