摘要
为探索2,4-二氯苯氧乙酸正丁酯酯化反应的最佳提取条件,以固体超强酸(SO2-4/SnO2)作为催化剂,研究了催化剂用量、反应温度及醇酸比对2,4-二氯苯氧乙酸正丁酯酯化反应的影响。结果表明:以固体超强酸(SO2-4/SnO2)作为催化剂活性最高,其酯化反应最佳合成工艺条件为A2B2C2,即催化剂用量0.6%、酯化反应温度110℃、正丁醇与2,4-二氯苯氧乙酸摩尔比2∶1,2,4-二氯苯氧乙酸的转化率达99.87%。
In order to explore best extraction conditions of 2,4-D butylate esterification, taking solid super acid as catalyst,the effects of temperature, catalyst, ratio of alcohol to acid on 2,4-D butylate esterification were studied. The results showed that： the optimum reaction conditions of esterification was A2 B2C2, that＇s the amount of catalyst was 0.6 %, reaction temperature was 110℃ and the molar ration of alcohol and acid was 2 ： 1, the conversion rate of 2,4-dichlorphenoxyacetic acid reached 99.87 %.
出处
《黑龙江农业科学》
2014年第5期70-72,共3页
Heilongjiang Agricultural Sciences
关键词
2
4-二氯苯氧乙酸正丁酯
酯化反应
催化合成
2,4-dichlorephenexyacetic acid n-butyl
esterification
catalytic synthesis
