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中文摘要: 粗钯用硝酸溶解后,加入定量的氯化钠使银以氯化银沉淀析出,过滤除去氯化银,将滤液中的钯再次还原为粗钯,用二氯二氨络亚钯法进行提纯,在提纯过程的盐酸酸化阶段适当增加溶液中的盐酸浓度,使残余的银以[AgCl2]^-的形式经过滤洗涤去除,从而得到纯净的海绵钯。
中文关键词: 粗钯 银 沉淀 酸化 分离
Abstract:Adding quantificational NaCl to precipitate Ag + as AgCl when crude palladium is dissolved with nitric acid Most of AgCl is separated by filtration Palladium in filtrate is deoxidized to crude palladium again, and then using the method of [Pd(NH 3) 2]Cl 2 to purify palladium At acidifying process of the purification, silver is formed into - by increasing concentration of chloric acid Through filtrating and washing, - is separated thoroughly and it will get pure palladium
文章编号: 中图分类号:TF832 TF836 文献标志码:
基金项目:
张正红
张正红(西北矿冶研究院,甘肃白银,730900)
张正红' target='_blank'>ZHANG Zheng-hong
引用文本:
张正红.粗钯中银的分离[J].有色金属(冶炼部分),2002(5):35-36,48.
.Silver Separating from Crude Palladium[J].Nonferrous Metals (Extractive Metallurgy),2002(5):35-36,48.
张正红.粗钯中银的分离[J].有色金属(冶炼部分),2002(5):35-36,48.
.Silver Separating from Crude Palladium[J].Nonferrous Metals (Extractive Metallurgy),2002(5):35-36,48.

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