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New mesoporous titanosilicate molecular sieve

Elsevier Science & Technology
DOI: 10.1016/s0167-2991(08)64099-9


New mesoporous titanium containing molecular sieves were prepared on the basis of the liquid-crystal templating mechanism originally used for the synthesis of MCM-41 materials. The structure characteristics of titanosilicate sieves with lower content of titanium are very similar to those of aluminosilicate MCM-41 from which it follows that titanium is built in pore walls. If the concentration of the titanium component in the reaction mixture at the beginning of the synthesis is too high an extra-wall titanium oxide species forms; the structure of thus prepared sieves is similar to that of silicate MCM-41.

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