| 摘要 |
1. A method of obtaining crystalline titanium silicalites with the structure of zeolites, containing tetrahedrically coordinated titanium, isomorphically substituted atoms of silicon in the crystal lattice. The empirical formula is xHAlO2.yTiO2.(1-x-y)SiO2, where x = 0.0005 - 0.1; y = 0.0005 - 0.1 and the silicalite has the structure of a zeolite beta. The method consists in heating a water mixture of reacting substances, containing a silicon compound, a titanium compound, an aluminium compound and a tetra-alkyl-ammonium hydroxide and/or halide and, possibly, a hydrogen peroxide and an organic peroxide, followed by crystallization. The obtained titanium silicalite crystals are separated from the liquid, rinsed, dried and calcinated. Characterized in that the hydrated titanium dioxide is used as the titanium compound. An aliphatic amine may be added to the reaction mixture.
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