摘要
为探讨季胺盐在相转移催化反应中的作用规律,使用不同卤离子季胺盐进行实验,结果表明,随着元素周期的增加,卤离子对应季胺盐催化效果减弱,反应速率降低。氯化四丁胺、溴化四丁胺、碘化四丁胺的萃取平衡常数之比为243.3:26.3:1;反应的速率之比为3.5:2:1。
Quaternary ammonium is a good kind of phase transfer catalyst. In order to find out the effects of the quaternary ammoniums, a catalytic reaction was conducted with quaternary ammoniums with different halides. The results showed that the catalytic effect weakened and the reaction rate decreased with the increase of the elemental periods of the halides. The ratio of the extraction equilibrium constants of tetrabutylammonium chloride, tetrabutylammonium bromide and tetrabutylammoniumiodidewas243.3： 26.3：1. The ratio of reaction rates was 3.5：2：1.
出处
《精细石油化工》
CAS
CSCD
北大核心
2006年第3期24-25,共2页
Speciality Petrochemicals
关键词
相转移催化
季胺盐
速度
平衡常数
phase transfer catalysis
quaternary ammoniums reaction rate
equilibrium constant
