Ammonia와 ethylene oxide로부터 이루어지는 ethanolamines 合成反應에서 反應速度常數 및 活性化에너지의 결정 등 反應速度式을 중심으로 한 ethanolamines제조과정을 回分式 실험에 의한 反應機構分析을 통해 고찰해 보았다. 반응을 2차의 非可逆 competitive consecutive reaction 이라고 가정하고, 28wt%의 ammonia 수용액을 사용하는 경우 反應速度 k₁은 20℃에서 1.235×10^(-3)ℓ/min·㏖, 35℃에서 3.243×10^(-3)ℓ/min·㏖, 50℃에서 7.784×10^(-3)ℓ/min·㏖, 活性化에너지는 약 11,500㎈/㏖로 구해졌다. 또 反應速度常數比가 K₂(=k₂/k₁)=8.51-0.051 C_W, K₃(=k₃/k₁)=14.81-0.196C_W로 구해져 물 濃度에 대한 1차 減少函數의 관계가 확인되었다. 反應速度 k₁과 速度常數比 k₂, k₃로부터 數値解析的으로 계산된 결과들은 實驗値와 매우 잘 一致하였다.

A study on the reaction mechanism for the manufacture of ethanolamines from aqueous ammonia and ethylene oxide was carried out in a bench scale batch reactor. Rate constants and activation energy were determined by assuming that the reaction occurred in the manner of irreversible competitive consecutive second order reaction. In the case of 28% aqueous ammonia as a reactant, the reaction rate constants in the first step (k₁) were calculated to be 1.235×10^(-3)ℓ /min·㏖, 3.243×10^(-3)ℓ/min·㏖, and 7.784×10^(-3)ℓ/min·㏖ at 20 ℃, 35℃ and 50℃ respectively. The calculated activation energy was about 11,500 ㎈/㏖. Process simulation using these calculated results was found satisfactory in good accordance with the actual experimental results.