Process for the preparation of titanium-containing molecular sieves.

摘要

The production of crystalline, titanium-containing molecular sieve (I) with the composition (SiO2)1-x(TiO2)x, in which x = 0.0001-0.03, comprises adding an aqueous template solution to a mixture of tetra-alkyl orthosilicate and tetra-alkyl orthotitanate, transferring the resulting mixture to an autoclave without distilling off the alcohol formed by hydrolysis, crystallising at above 100 degrees C, preferably 170-190 degrees C under autogenous pressure, separating the solid by a known method, optionally washing, and calcining at 400-1000 degrees C.