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钛-硅沸石的结构表征及其催化性能
STUDY OF STRUCTURE AND CATALYTIC PROPERTY OF TITANOSILICATE ZEOLITE
【摘要】 XRD,IR,29SiMASNMR,UV-VIS及XPS能谱表征证实钛原子进入了钛-硅五元环沸石的骨架晶格位(不含铝).TG-DTA结果表明,钛原子进入沸石骨架导致沸石骨架的热稳定性提高,超过1473K.氯丙烯与H2O2(30%)的环氧化反应结果表明钛-硅沸石具有优异的氧化性能,这也从另一个侧面证实了钛原子位于沸石骨架晶格位.
【Abstract】 he structure and catalytic property of titanosilicate zeolite(no Al)were studied by XRD, IR, 29Si HASNER,UV-VIS spectra and XPS energy spectrum. The characterization verified that Ti atoms were present in the framework lattice of zeolite. TG-DTA results showed that the thermal stability of Ti-Si .zeolite framework was over 1473 K. On the other hand,TS-1 and TS-2 zeolites possessed excellent catalytic oxidation property. Both of them could catalyze the epoxidation reaction of allylchloride using hydrogen peroxide(30%)as oxidant.It also confirmed that Ti atoms had been incorporated into the framework of zeolite.
【Key words】 Ti-Si pentasil zeolite; titanosilicate zeolite; characterizatiom; epoxidation of allylchloride;
- 【文献出处】 催化学报 ,CHINESE JOURNAL OF CATAL YSIS , 编辑部邮箱 ,1994年02期
- 【分类号】O643.36
- 【被引频次】92
- 【下载频次】266