摘要
运用条件试验法,以己二酸、正辛醇与正癸醇混合物为原料,直接酯化合成己二酸正辛正癸酯,分别研究了反应温度、反应时间、原料配比、催化剂用量等条件对合成反应的影响,确定了最佳工艺条件。该方法合成已二酸辛正癸酯的最佳工艺条件是:反应温度210℃,反应时间45min,正辛醇与正癸醇混合物与己二酸的质量比为3.88,催化剂用量1.2g(己二酸用量20.2g),己二酸正辛正癸酯的收率达到95.5％。催化剂不经处理可循环使用多次。该催化剂具有价廉易得、催化活性好、不腐蚀设备、无环境污染等优点。
Using conditional test, the n-octyl n-decyl adipate was synthesized from octyl alcohol, decyl alcohol and adipic acid by direct esterification. The effects of reaction temperature, reaction time, raw materials ratio,and the catalyst dosage on the yield were studied. The proper technological conditions were given as follows: the reaction temperature is 210℃,reaction time is 45 min,the mass ratio of octyl alcohol and decyl alcohol to adipic acid is 3. 88, catalyst dosage is 1. 2g (based on 20. 2g adipic acid). The yield of the product is 95. 5%. The catalyst can be used for times without any treatments. Experimental results show that the catalyst has many advantages,such as easy preparation,low cost and high activity. It is also non-corrosive and pollution-free to the environment.
出处
《现代塑料加工应用》
CAS
2004年第4期34-36,共3页
Modern Plastics Processing and Applications
