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The synthesis of titanosilicalite has become a hotspot in the zeolite catalytic fields. In this paper, TS-1 zeolite samples were synthesized with tetrapropyl a mmonium bromide as the template, with ammonia as the base source and with the mi xtu re of titanium tetrachloride and tetrabutyl orthotitanate as the titanium source . The TS-1 samples have excellent catalytic performance in epoxidation of propy lene with aqueous hydrogen peroxide. The samples were characterized by XRD and I R. The introduction of chlorine decreases the association degree of titanium alk oxides and it may prevent preferential segregation of titanium and silicon.

参考文献

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[9] van der Pol A J H P;van Hooff J H C .[J].Applied Catalysis A:General,1992,92(02):93.
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[11] Vayssilov GN .Structural and physicochemical features of titanium silicalites[J].Catalysis Reviews. Science and Engineering,1997(3):209-251.
[12] Clerici M G;Bellussi G;Romano U .[J].Journal of Catalysis,1991,129(01):159.
[13] Khouw C B;Dartt C B;Labinger J A et al.[J].Journal of Catalysis,1994,149:195.
[14] Aizawa M;Nosaka Y;Fujii N .[J].Journal of Non-Crystalline Solids,1994,168(1-2):49.
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