The polymerization of styrene was mediated by copper(I) bromide/pentramethyl diethyl-triamine(PMDETA) using ethyl 2-bromopropionate(EBP) as initiator and a catalytic amount of Lewis acid(LA),such as aluminum hydroxide(AH),boric acid(BA),and(2-methylpropyl)boronic acid(MPBA),as a rate-accelerating additive.
以2-溴丙酸乙酯(EBP)为引发剂,溴化亚铜(CuBr)为催化剂,N,N,N′,N″,N″-五甲基二乙基三胺(PMDETA)为配体,选择了3种路易斯酸(LA),即氢氧化铝(AH)、硼酸(BA)、异丁基硼酸(MPBA)为加速剂,对苯乙烯(St)原子转移自由基聚合的加速进行了研究。
Compared to the traditional Lewis acid catalysts which comprised sulfur and zeolite catalytic chlorination system,it took on much superiority such as high-selectivity,high-yield,simple operation,savings and environmental protection etc.
相比于传统的路易斯酸-含硫催化剂体系和沸石催化氯化体系,有选择性高、产率高、操作简单、经济环保等优点。
This paper gave an overall review of the application of lewis acid catalytic on various drug synthesis.
总结了路易斯酸在各种药物合成反应中的催化作用。
Analysis of Lewisite in Soil;
土壤基质中路易氏剂的测定方法
Determination of Microamount of Lewisite in Soil by Gas Chromatography Microwave Induced Plasma Atomic Emission Detection;
气相色谱-微波诱导等离子体原子发射光谱法测定土壤中的微量路易氏剂
Determination of the Lewisite and Ar- senic in Water after Derivatization with 2,3- dimercaptopropanol by Gas Chromatography- Mass Spectrometry;
衍生化气相色谱－质谱法测定水中的路易氏剂及砷酸
his paper deals with the introduction and review of different polymerization mechanisms of conjugated diene in the presence of Lewis base used as polar additive,proposed by different authors abroad as well as in China.
主要介绍和评述国内外文献中各学派对共轭二烯烃在阴离子聚合过程中借助路易氏碱的存在下，根据最终产物微观结构的结果，从而各自提出的聚合机理；最后着重综合了本文作者及其同事们多年来在这方面的研究成果，同时提出了一个较完整的机
This paper introduces the complexation and dissociation of different Lewis bases with active species in the area of anionic polymerization reported in literatures and elucidates their applications.
介绍和评述了文献中有关路易氏碱在阴离子聚合中对活性中心的络合和解缔作用。
Some Thoughts on Urban Planning System of Louisville,USA;
对美国路易维尔城市规划体系的若干认识
A comparative study between Louis Kahn and his Chinese classmates;
路易·康和他的中国同学们