Synthesis of hydroxyethylhydrazine by the Raschig process and comparison with synthesis by the alkylation process
作者:V. Goutelle、V. Pasquet、A. El Hajj、A. J. Bougrine、H. Delalu
DOI:10.1002/kin.20559
日期:2011.7
The Raschig synthesis of hydroxyethylhydrazine (HEH) is studied, that is, the reaction of monochloramine on ethanolamine. The formation of HEH is monitored by UV spectrometry, and the influence of temperature and pH is studied. The primary reaction is an SN2‐type mechanism, whereas the main secondary reaction is the oxidation of HEH by monochloramine. This reaction is also monitored by UV spectrometry
研究了Raschig羟乙基肼(HEH)的合成,即一氯胺与乙醇胺的反应。通过紫外光谱法监测HEH的形成,并研究温度和pH的影响。一级反应是SN 2型机制,而二级反应主要是一氯胺氧化HEH。该反应也通过紫外光谱法进行监测,氧化产物通过GC-MS分析鉴定,表明形成了羟乙基hydr。确定了反应机理和速率常数,结果可以确定在HEH合成过程中发生的主要反应。系统地研究了摩尔比p([HEH]0 / [NH 2 Cl] 0)和最终的氢氧化钠浓度和温度。与已经公开的另一种合成方法进行了比较,即通过氯乙醇或环氧化物将肼烷基化。©2011 Wiley Peiodicals,Inc. Int J Chem Kinet 43:331–344,2011年