Abstract

The methods for producing bismuth pentahydrate from metallic bismuth by the interaction of oxide or basic bismuth nitrate with solutions of nitric acid were compared using X-ray phase, chemical, atomic absorption, mass spectrometric analyses, and electron microscopy. The possibility of preparing it from bismuth metal as a result of oxidation of the latter and processing of the produced oxide with a solution of nitric acid is shown. A variant of the preparation of bismuth pentahydrate is considered by preliminary hydrolytic purification of bismuth-containing nitric acid solutions by precipitation of bismuth in the form of oxohydroxonitrate and its interaction with nitric acid solutions. A technology has been developed to eliminate the emission of toxic nitrogen oxides into the atmosphere and to produce high purity bismuth pentahydrate.

中文翻译：

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硝酸溶液的加工生产五水合硝酸铋

摘要

利用X射线相，化学，原子吸收，质谱分析和电子显微镜，比较了金属铋通过氧化物或碱性硝酸铋与硝酸溶液的相互作用生产五水合铋的方法。示出了由铋金属进行氧化和由硝酸溶液处理生成的氧化物而由铋金属制备铋的可能性。考虑了五水合铋的制备方法的一种变体，该方法是通过沉淀含氧合氢氧酸盐形式的铋及其与硝酸溶液的相互作用来初步水解纯化含铋硝酸溶液。已经开发出一种消除有毒氮氧化物向大气中排放并生产高纯度五水合铋的技术。