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本文研究了以氨水一丁二酮肟作沉淀剂沉淀分离镍系催化剂中的干扰元系铝、镍、铁的各种条件,考察了在同一份试液中,用EDTA连续络合滴定法测定钙、镁含量的可靠性,建立了转化催化剂中钙、镁的分析方法。实验结果表明,本方法准确可靠,且较简便,氧化钙回收率为99.50～100.75%,氧化镁回收率为96.00～100.50%,标准偏差不大于0.12%。
In this paper, various conditions for the interference of aluminum, nickel and iron in nickel-based catalysts by the precipitation of ammonia-dimethylglyoxime as precipitants were investigated. In the same test solution, the conditions were determined by EDTA continuous complexometric titration Calcium, magnesium content of the reliability of the conversion catalyst was established calcium and magnesium analysis. The experimental results show that the method is accurate and reliable, and the method is simple, the recovery rate of calcium oxide is 99.50-100.75%, the recovery rate of magnesium oxide is 96.00-100.50%, and the standard deviation is not more than 0.12%.