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以二羧酸、水合肼与甲醛为原料,合成了3个含氮、氧官能团树脂:乙二酰二肼甲醛树脂、丙二酰二肼甲醛树脂和丁二酰二肼甲醛树脂. 用分批处理法评价了这3种树脂捕获Zn2+的能力. 3种树脂捕获Zn2+的捕获能力的大小为:丁二酰二肼甲醛树脂>丙二酰二肼甲醛树脂>乙二酰二肼甲醛树脂. 讨论了捕获时间、捕获温度、pH值对捕获Zn2+能力的影响. 捕获能力随pH值不同而不同. 高温不利于捕获. 捕获时间为3 h时,吸附捕获达到平衡. 2+
Using dicarboxylic acid, hydrazine hydrate and formaldehyde as raw materials, three nitrogen-containing and oxygen-functional resins were synthesized: oxalic dihydrazide formaldehyde resin, malonic acid dihydrazide formaldehyde resin and succinic dihydrazide formaldehyde resin. The ability of the three resins to capture Zn2 + was evaluated by the treatment method.The capture capacities of Zn2 + by the three resins were as follows: succinyl dihydrazine formaldehyde resin> malonic acid dihydrazide formaldehyde resin> oxalic dihydrazide formaldehyde resin. The effect of capture time, capture temperature and pH on the ability of Zn2 + capture was investigated.Capacity varied with pH value.High temperature was unfavorable for capture.At the time of 3 h, the adsorption and capture reached equilibrium.2 +