摘要
以烷基叔胺和碳酸二甲酯为原料制备烷基碳酸甲酯铵,再经水解得到烷基碳酸氢铵,通过离子膜连续电解法合成长链烷基季铵碱。以十四烷基三甲基氢氧化铵为例,考察了电解反应温度、电流密度、阳极液浓度、阴极出料液浓度对电流效率的影响,得出其优化工艺条件为:反应温度65℃、电流密度450 A/m2、阳极液浓度1.40 mol/L、阴极液出料浓度为0.15 mol/L,在该条件下电解反应的电流效率可达67%以上;通过1HNMR、IR对产品结构进行了表征,结果表明,合成的产品为长链烷基季铵碱;对得到的长链烷基季铵碱的表面活性、p H值、润湿性、泡沫性等性能进行了研究。
The long-chain alkyl quaternary ammonium hydroxide was synthesized by the hydrolysis and continuous ion membrane electrolysis of alkyltrimethylammonium methylcarbonate; and the alkyltrimethylammonium methylcarbonate was prepared by the reaction of alkyl tertiary amine and dimethyl carbonate. Take tetradecyltrimethylammonium hydroxide as an example,the influences of the electrolysis reaction temperature,current density,the concentration of anolyte and the discharging concentration of catholyte on the current efficiency of electrolysis reaction were investigated. And the optimized conditions were： reaction temperature 65 ℃,current density 450 A / m2,the concentration of anolyte 1. 40 mol / L,and the discharging concentration of catholyte 0. 15 mol / L. Under the optimized conditions,the current efficiency could reach 67%. The structure of the products were characterized by means of1 HNMR and IR,and the results show that long-chain alkyl quaternary ammonium hydroxides were synthesized successfully. The surface activity,p H,wetting and foaming properties of the long-chain alkyl quaternary ammonium hydroxides were measured.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2015年第7期746-750,共5页
Fine Chemicals
基金
十二五国家科技支撑计划(2014BAE03B01)
山西省科技攻关项目(20130321019-02)~~
关键词
长链季铵碱
连续电解
碳酸二甲酯
表面活性
性能
long-chain quaternary ammonium hydroxides
continuous electrolysis
dimethyl carbonate
surface activity
properties
