| 摘要 |
PROBLEM TO BE SOLVED: To purify a hydrogen peroxide soln. contg. metals or metallic compds. as inorg. impurities and to obtain a high purity hydrogen peroxide soln. by using a highly basic anion exchange resin converted into a carbonate type, hydrogencarbonate type or hydroxide type one by contact with a chemical soln. passed through a filter having a specified average pore diameter. SOLUTION: A commercially available highly basic anion exchange resin is converted into a carbonate type, hydrogencarbonate type or hydroxide type one by contact with a chemical soln. prepd. by dissolving sodium, potassium or ammonium carbonate or hydrogencarbonate, sodium hydroxide, potassium hydroxide or an ammonia soln. in ultrapure water and passed through a filter having <=1.0 μm average pore diameter. A hydrogen peroxide soln. contg. metals or metallic compds. as inorg. impurities is brought into contact with the resultant anion exchange resin to produce the objective high purity hydrogen peroxide soln. |
