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考察了反应压力、催化剂、助催化剂和反应温度对二乙胺（ＤＥＡ）液相羰基化合成二乙基甲酰胺（ＤＥＦ）反应的影响，确定了量佳反应条件．结果表明，ＣＯ分压（Ｐ∞）对反应有明显影响，生成ＤＥＦ的速率随Ｐ∞增大而增大；催化剂浓度对反应的速率影响较小，添加剂环氧丙烷（ＰＯ）对催化剂有较强的助催化作用，而且助催化作用随ＰＯ浓度的增加而增大，生成ＤＥＦ的选择性随ＰＯ浓度的增加而降低，温度对反应也有明显的影响，确定最佳反应条件为：ＣＯ分压小于６．０ＭＰａ，反应温度为８０℃至９０℃，催化剂浓度不大于０．０５ｍｏｌ／Ｌ，助催化剂ＰＯ浓度不大于４．０ｍｏｌ／Ｌ．此时选择性不小于９６％．
The effect of reaction pressure, catalyst, cocatalyst and reaction temperature on the liquid phase carbonylation of diethylamine (DEA) to diethyl formamide (DEF) was investigated. The optimum reaction conditions were determined. The results showed that the partial pressure of CO (P∞) significantly affected the reaction and the rate of DEF formation increased with the increase of P∞. The catalyst concentration had little effect on the reaction rate. The additive propylene oxide (PO) Strong cocatalytic effect, and the cocatalytic effect increases with the increase of PO concentration, the selectivity of DEF generated decreases with the increase of PO concentration, and the temperature also has a significant effect on the reaction. The optimal reaction conditions are: CO partial pressure Less than 6.0MPa, the reaction temperature is 80 ° C to 90 ° C, the catalyst concentration is not more than 0.05mol / L, and the promoter PO concentration is not more than 4.0mol / L. At this point the selectivity of not less than 96%.