Patent ID: 8563461

Claim:
A process for the activation of titanium silicalite as an oxidation catalyst, comprising: feeding an aqueous solution to a fixed bed oxidation reactor, the fixed bed oxidation reactor comprising a titanium silicalite catalyst, optionally mixed with an inert material, the aqueous solution comprising: ammonium acid fluoride in a concentration ranging from 0.1% to 1% by weight; and hydrogen peroxide in a concentration ranging from 3% to 10% by weight; treating the titanium silicalite catalyst with the ammonium acid fluoride and hydrogen peroxide aqueous solution for a time of from 2 to 6 hours, at a temperature ranging from 20 to 120° C.; feeding water to the fixed bed oxidation reactor at the end of the treatment reaction to remove residues of the treatment solution; and drying or calcining the treated catalyst in the fixed bed oxidation reactor to obtain the activated catalyst; wherein the catalyst activation is continuous with an oxidation reaction in the fixed bed oxidation reactor, and the catalyst is of formula: x TiO 2 .(1 −x )SiO 2 wherein x is from 0.0001 to 0.04.