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近年来已有关于用离子交换法分离锂、钠的报告.本试验是用国产阳一号强酸离子交换树脂,以盐酸和甲醇的混合液作淋洗剂,并找出锂、钠定量分离的适当条件. 实验部分 (一)分离的操作方法 1.交换柱:为一长50厘米,内径1.6厘米均匀玻璃管,上接一盛液漏斗,下接一活栓.在接近活栓的一端铺一层玻璃纤维,用蒸馏水注满玻璃管,然后将事先用水浸过三、四小时的阳一号离子交换树脂(钠型,粒度为80-120筛孔,上海信谊化学制药厂出品)倾入管中,不时以手指弹动管壁,使树脂间空隙均匀,直至盛满管颈为止(约40克干树脂),再盖一层玻璃纤维和一块滤片. 2.交换能力的测定:将交换树脂以5-6%盐酸变为氢型,继用蒸馏水洗涤至呈中性.以0.5N氯化钠(或氯化锂)溶液进行交换,流速为1.8毫升/分,将交换滤液每次10毫
In recent years, there have been reports on the separation of lithium and sodium by ion-exchange method .This experiment is made with domestic strong acid ion exchange resin, mixed with hydrochloric acid and methanol as eluent, and to find lithium, sodium quantitative separation The appropriate conditions Experimental part (A) of the separation method of operation 1. Exchange column: a 50 cm long, 1.6 cm diameter glass tube evenly, followed by a Sheng funnel, the next take a live bolt. Glass fiber, filled with distilled water glass tube, and then immersed in water for three or four hours in advance of the Yang ion exchange resin (sodium type, particle size of 80-120 sieve, Shanghai Xin Yi Chemical Factory) into the tube , From time to time by the finger to move the tube wall, the gap between the resin evenly, until filled with necks so far (about 40 grams of dry resin), and then covered with a layer of glass fiber and a filter 2. Determination of exchange capacity: exchange resin 5-6% hydrochloric acid into hydrogen form, followed by washing with distilled water until neutral.With 0.5N sodium chloride (or lithium chloride) solution exchange, the flow rate of 1.8 ml / min, the exchange filtrate 10 milliliters