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近年来,偏钨酸铵(NH_4)_6[H_2(W_3O_(10)_4]·nH_2O 的研究,特别是工业上的制备方法更引起人们的关注。本文用离子交换树脂作隔膜的电解酸化法制备酸式偏钨酸铵,此法操作简单,安全、成本低廉、产率达90%以上。同时,由于电解法不需加入其他试剂,可避免引入杂质,有利于产品的纯化。产物为无色透明的削角八面体晶形。不同 pH 值制得的偏钨酸铵通过组成分析,紫外光谱、红外光谱,热分析及水溶性等都是一致的,并与文献所得产品相同。
In recent years, the research of ammonium metatungstate (NH 4) 6 [H 2 (W 3 O 10 (10) 4] · nH 2 O has attracted more attention especially in the field of industrial preparation.In this paper, ion exchange resin Acid ammonium metatungstate, this method is simple, safe, low cost, the yield rate of more than 90%. At the same time, as electrolysis without adding other reagents, to avoid the introduction of impurities, is conducive to the purification of the product. Transparent chamfered octahedral crystals.Ammonium metatungstate prepared by different pH values is the same as that obtained from the literature by composition analysis, UV, IR, thermal analysis and water solubility.