摘要
以吗啉工业生产中的副产物为原料,采用加压水解法,经分离后,可得到吗啉及混合醇。在210℃,2.0MPa下,水与副产物的质量比为1:1,采用氢氧化钠为催化剂,用量为副产物的1.5%,反应时间为4小时,吗啉的收率可达35%,混合醇的收率可达42%。混合醇可替代乙二醇作为防冻液的主要原料,60%的混合醇水溶液凝固点能达到-40℃以下。
The morpholine and mixed alcohols were obtained by pressurized hydrolysis reaction and separation with by - products in industrial production of morpholine as raw materials. The yield of morpholine can be 35% and the yield mixed alcohol can be 42% under temperature of 210 ℃, pressure of 2.0MPa, the mass ratio of the water and morpholine by -product was of 1：1, using sodium hydroxide as catalyst, and the amount of 1.5% for the by -product, reaction time of 4 hours. Mixed alcohols can replace ethylene glycol as a main composition in antifreeze, and the freezing point of 60% of the mixed alcohol solution can reach below -40 ℃.
出处
《广州化工》
CAS
2009年第9期161-162,165,共3页
GuangZhou Chemical Industry
关键词
吗啉
吗啉副产物
加压水解
防冻液
morpholine
morpholine by - products
pressure hydrolysis
antifreeze
