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采用不同方法合成了钛硅分子筛TS 1.Raman光谱表征表明 ,不同方法合成的TS 1分子筛中钛的分散状态不同 .当钛的含量低于 1 5 %时 ,不同方法合成的TS 1中的钛主要以高分散状态存在 .当钛含量达到 2 0 %以上时 ,不同方法合成的钛硅分子筛中钛的分散状态显著不同 ,其中以TiCl3 合成的分子筛中骨架钛的含量最高 ,而杂晶相锐钛矿含量最低 ,同时催化氯丙烯环氧化活性也最高 .而以正钛酸四丁酯为钛源 ,在静止状态下晶化的钛硅分子筛中锐钛矿含量最高 ,催化活性最低
The results of spectral characterization of TS 1. Raman using different methods show that the dispersion states of titanium in TS 1 zeolite synthesized by different methods are different. When the content of titanium is less than 15%, the titanium in TS 1 synthesized by different methods Mainly in the highly dispersed state.When the content of titanium reaches 20% or more, the dispersion state of titanium in the different synthesis methods of Ti-Si molecular sieve is significantly different, among them TiCl3 synthesized the highest content of framework titanium, The content of titanium ore is the lowest and the catalytic activity of epichlorohydrin is the highest.When titanium tetrabutyl titanate is used as titanic source, the content of anatase in the crystalline titanium silicalite at rest is the highest and the catalytic activity is the lowest