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US 5,691,266 AGranted
Method of making a titanosilicate catalyst
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsTakashi Onozawa, Osamu Kondo
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Abstract
A titanosilicate catalyst and method for preparing the same, comprising primary titanosilicate particles which are combined with one another, wherein the titanosilicate catalyst comprises pores having a pore diameter of from 50 to 300 .ANG.. The inventive catalyst exhibits activity in a hydroxylation reaction of an aromatic compound, or an epoxidation reaction of an olefin, or an ammoximation reaction of a ketone using hydrogen peroxide as an oxidant.
Claims9
A method for preparing a titanosilicate catalyst, comprising:
- reacting silicon oxide, titanium oxide and tetraalkylammonium hydroxide in the presence of water or steam to form primary titanosilicate particles;
- decreasing the pH of the reaction mixture to form a secondary particle comprising a combination of the primary particles with one another;
- and
- calcining the secondary particle.
1 more element
Dependencies are inferred from the claim text.