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采用水合肼还原溶解法纯化氯铂酸铵，通过探索不同温度、酸度、还原剂加入量对还原溶解过程的影响，并采用XRD和SEM对产品成分和形貌进行了分析与表征。确定了最佳反应条件，并通过在还原剂中添加阴离子表面活性剂的方式，改变氯铂酸铵沉淀表面的电荷极性，达到进一步纯化的目的。纯化后的氯铂酸铵经煅烧后制备的铂粉纯度可达99.95%以上。
Abstract：Ammonium chloroplatinate was purified by hydrazine hydrate reduction dissolving method.The composition and morphology of the product were analyzed and characterized by XRD and SEM.The optimum reaction conditions were determined by exploring effects of reaction temperature, acidity, and dosage of reducing agent on dissolution process.The charge polarity on precipitated surface of ammonium chloroplatinate was changed by adding anionic surfactant to reducing agent to achieve further purification of ammonium chloroplatinate.The purity of platinum powder prepared by calcination of purified ammonium chloroplatinate is 99.95% above.
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基本信息:
中图分类号:TF833
引用信息:
[1]潘从明,杨丽虹,闻译竣,等.还原溶解法提纯铂[J].有色金属(冶炼部分),2022(07):43-47.
基金信息:
国家重点研发计划项目(2018YFC1901604)
2022-07-02
2022-07-02