论文部分内容阅读
以表面经偶联剂修饰的γ-Fe2O3为载体,通过聚[β-氯乙基缩水甘油醚]分别与乙二醇单甲醚和一缩二乙二醇单甲醚的醇钠盐反应,合成了两种磁性梳状聚醚三相相转移催化剂,研究了它们在碘代、二氯卡宾对双键加成和混合醚制备反应中的催化活性.结果表明,这类磁性催化剂在机械搅拌下易于均匀分散在水中,静置下自身能快速凝聚沉降,并具有良好的催化活性和重复使用性能.
Γ-Fe2O3 with a surface modified by a coupling agent as a carrier is respectively reacted with alcohol sodium salt of ethylene glycol monomethyl ether and diethylene glycol monomethyl ether by poly [-chloroethyl glycidyl ether] Two kinds of magnetic comb-type polyether three-phase phase transfer catalysts were synthesized and their catalytic activity in the double bond addition reaction and mixed ether preparation of iodine and dichlorocarbene was studied. The results showed that the magnetic catalysts were mechanically stirred Under the easy-to-disperse evenly in water, it can rapidly coagulate and sediment under static state, and has good catalytic activity and reusability.