Titanosilicate catalyst particle.

摘要

A titanosilicate catalyst and method for preparing the same, comprising primary titanosilicate particles which are combined with one another, wherein the combined part of the primary particle is a crystalline substance and the median diameter of the catalyst is 1 mu m or more. The inventive catalyst has pores with a diameter of 50 to 300 ANGSTROM and exhibits activity in a hydroxylation reaction of an aromatic compound or on epoxidation reaction of an olefin or an ammoximation of a ketone using hydrogen peroxide as an oxidant.