Structured catalyst including microporous oxides of silicon, alu

Details Structured catalyst including microporous oxides of silicon, alu Structured catalyst including microporous oxides of silicon, alu

1994-07-12

1996-06-11

Lander, Ferris

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 63, B01J 2906

Patent

active

055255639

ABSTRACT:
A catalyst includes or consists essentially of the oxides of silicon, aluminum and titanium, characterized in that the catalyst particles are built up from a core with the composition (SiO.sub.2).sub.y (AlO.sub.2).sub.y M.sub.y, wherein x/y=10 to .infin. and M=H, Na, K, NH.sub.4, or NR.sub.4, wherein R is a C.sub.1-8 -alkyl, and a shell with the composition (SiO.sub.2).sub.n (TiO.sub.2).sub.m, wherein n/m=12 to 1000. Both the core and the shell have a crystal structure of MFI or MEL. The catalyst can be prepared by preparing a synthesis gel for the preparation of a titanium silicalite, thereafter introducing an aluminosilicate of the MFI or MEL structural type into this synthesis gel, and working up the synthesis gel in a known manner to obtain the product.

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