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| 醋酸酐生产用废铑催化剂中铑的测定 |
| The Determination of Rhodium in Waste Rhodium Catalyst for Production of Acetic Anhydride |
| 投稿时间：2018-05-25 |
| DOI： |
| 中文关键词: 分析化学 铑 密闭消解 分光光度法 电感耦合等离子体发射光谱法(ICP-AES) |
| 英文关键词: analytical chemistry rhodium sealed digestion spectrophotometry ICP-AES |
| 基金项目: |
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| 中文摘要: |
| 醋酸酐生产用废铑催化剂样品在密闭消解罐中用HNO3-H2O2于160℃经8 h可消解完全，并避免样品损失。考察了样品处理和不同测定方法对测定结果的影响。结果表明，合适的样品量为0.1~0.3 g；消解液经H2SO4-HClO4发烟处理可以去除样品中有机组分的干扰；氯化亚锡分光光度法和ICP-AES法均可准确测定样品中的铑含量，测定相对标准偏差(RSD)均小于2%，加标回收率分别为97.53%~101.65%和98.19%~102.70%，在实际测定中可根据实验室条件选择合适的测定方法。 |
| 英文摘要: |
| The waste rhodium catalyst for production of acetic anhydride was digested by HNO3-H2O2 in a sealed digestion tank at 160℃, and the sample was completely digested without loss after 8 hours. The effect of sample pretreatment and different methods on the determination results was investigated. The results showed that the optimum sample weight was 0.1~0.3 g. The digestion solution was treated by H2SO4-HClO4 to remove the interference of organic matter. Both stannous chloride spectrophotometry and ICP-AES methods can be used for determining the rhodium content in samples. The relative standard deviation was less than 2%, and their recovery rates were 97.53%~101.65% and 98.19%~102.70%, respectively. In actual applications, an appropriate method can be selected according to the available laboratory conditions. |
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