| 摘要 |
PURPOSE:To generate continuously gaseous oxygen at a fixed flow rate without forming a precipitate by bringing sodium percarbonate into contact with a cobalt salt and a specified org. carboxylic acid or its salt in water. CONSTITUTION:Sodium percarbonate is brought into contact with a cobalt salt and an org. carboxylic acid having at least one hydroxyl group and at least one carboxyl group or its salt in water. Cobalt sulfate, cobalt chloride, cobalt acetate or the like is used as the cobalt salt. The org. carboxylic acid or its salt may be a polybasic acid such as citric acid or tartaric acid or its alkali metallic salt. The cobalt salt and the org. carboxylic acid or its salt are used in 1:(0.1-10) weight ratio, and sodium percarbonate is brought into contact with the compounds in 1:(0.001-0.1) weight ratio.
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