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本文提出了一种钽的特效沉淀剂——氯化四苯鉮盐酸,并拟定了以(C_6H_5)_4AsTaF_6大分子缔合物为称量形式重量法测定含铌复杂基体中钽的新方法。系统地研究了该缔合物的物理化学性质。探讨了27种金属离子的吸附和共沉淀机理,其中对铌的分离效果非常理想。研制了C/C复合多孔材料过滤坩埚,圆满地解决了TPATaF_6的过滤问题。
A new tantalum precipitating agent, tetraphenyltin chloride, was proposed in this paper. A new method for the determination of tantalum in complex Nb-bearing matrix with (C_6H_5) _4AsTaF_6 macromolecule complex as gravimetric method was developed. The physicochemical properties of this complex have been systematically studied. The adsorption and coprecipitation mechanism of 27 kinds of metal ions were discussed. The separation effect of niobium was ideal. C / C composite porous material filter crucible was developed, which successfully solved the filtration problem of TPATaF_6.