Process of oxidizing cyclohexane

A process of oxidizing cyclohexane, comprising feeding cyclohexane, an aqueous hydrogen peroxide solution and optionally an organic solvent into a reaction zone through a feed inlet thereof under the oxidation reaction conditions for contact, and providing all or most of the oxidation product at the reaction zone bottom, wherein a part or all of the packing in the reaction zone is a titanium silicate molecular sieve-containing catalyst in the form of microspheres having a diameter of about 2 to about 5000 microns, and the organic solvent is one or more of an alcohol, a ketone and an organic carboxylic acid having a boiling point of about 40- about 250 degrees C.;

• wherein the titanium silicate molecular sieve catalyst is prepared by a process comprising:
• hydrolyzing an organic silicon compound and an templating agent useful for producing the titanium silicate molecular sieve under hydrolysis conditions to obtain a colloidal solution;
• then mixing homogeneously the titanium silicate molecular sieve and the colloidal solution to obtain a slurry;
• and granulating the slurry to obtain the catalyst in the form of microsphere.