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稀土材料中的痕量Al杂质对稀土材料的性能具有严重的危害,因此,有效去除稀土中的Al杂质具有重大的意义。本文采用豌豆为碳源,合成了一种含氮炭材料AC-P700,并对其进行了比表面分析、红外表征及XPS测试。研究了AC-P700对Al(Ⅲ)的吸附性能和识别性能,并分析探索了识别机理。AC-P700的比表面为1277.1m~2/g,平均孔径为1.90nm。AC-P700对Al(Ⅲ)具有良好的吸附性能和识别选择性能。吸附容量可以达到14.3mg/g。相对于La(Ⅲ)和Ce(Ⅲ),AC-P700对Al(Ⅲ)的选择性系数可以分别达到9.6和8.7。另外,还具有良好的再生与重复使用性能。
Trace Al impurities in rare earth materials have a serious impact on the properties of rare earth materials, therefore, it is of great significance to effectively remove Al impurities in rare earths. In this paper, a carbon-containing carbon material AC-P700 was synthesized using peas as carbon source, and its surface area, infrared characterization and XPS were tested. The adsorption performance and recognition performance of Al (Ⅲ) by AC-P700 were studied, and the identification mechanism was explored. The specific surface area of AC-P700 is 1277.1m ~ 2 / g and the average pore diameter is 1.90nm. AC-P700 Al (Ⅲ) has good adsorption properties and recognition options. Adsorption capacity can reach 14.3mg / g. The selectivity coefficients of AC-P700 to Al (Ⅲ) can reach 9.6 and 8.7 respectively with respect to La (Ⅲ) and Ce (Ⅲ). In addition, it also has good regeneration and reuse performance.