Abstract The synthesis of neodymium(III) bromide (NdBr3) by sintering brominating of neodymium oxide (Nd2O3) with ammonium bromide (NH4Br) was investigated. The influence of various synthesis parameters (temperature, contact time and stoichiometry) on the reaction yield was studied and optimized. The main interaction effects of the synthesis parameters on the reaction yield were also determined by a full 23 factorial designs with six replicates at the center point. This study showed that the optimum conditions for the synthesis of NdBr3 are following: contact time t = 60 min, stoichiometry in moles Nd2O3:NH4Br = 1:24 and temperature T = 400 °C. The reaction yield for these parameters was equal to 97.80%. The first order model was obtained to predict the reaction yield as a function of these three parameters. It was shown that all parameters have a significant positive influence on reaction yield. In addition it was pointed out also that the interaction effects between them are significant.

中文翻译：

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基于全因子设计分析的干法溴化钕 (III) 合成参数的优化和建模

摘要 研究了氧化钕 (Nd2O3) 与溴化铵 (NH4Br) 烧结溴化合成溴化钕 (NdBr3)。研究并优化了各种合成参数（温度、接触时间和化学计量）对反应产率的影响。合成参数对反应产率的主要交互作用也由完整的 23 个因子设计确定，在中心点有六个重复。该研究表明，合成 NdBr3 的最佳条件如下：接触时间 t = 60 分钟，化学计量（摩尔数 Nd2O3:NH4Br = 1:24）和温度 T = 400 °C。这些参数的反应产率等于 97.80%。获得一阶模型以预测作为这三个参数的函数的反应产率。结果表明，所有参数对反应产率都有显着的积极影响。此外还指出，它们之间的交互作用是显着的。