The invention relates to the field of catalytic materials and in particular provides a
titanium silicalite
molecular sieve, a preparation method and application of the
titanium silicalite
molecular sieve. The
titanium silicalite
molecular sieve is composed of the following elements in percentage by
mass: 0.01-10% of precious metals,
silicon, 0.01-10% of titanium and
oxygen, wherein the I960 / I550 value is 0.5-0.9; the U480 / U330 value is 0.5-5; the N-116 / N-112 value is 0.01-0.2; and the particle size is 0.5-5 microns. The invention further provides a
cyclic ketone oxidation method. The
cyclic ketone oxidation method comprises the following step: contacting
cyclic ketone, an
oxidizing agent and a catalyst, wherein the catalyst contains the titanium silicalite molecular
sieve disclosed by theinvention. Compared with the prior art, the titanium silicalite molecular
sieve disclosed by the invention has the advantages that
diffusion of the reactants and product is facilitated in an oxidationreaction, so that
oxidative activity is fully achieved, and the selectivity is improved. For example, when applied to a reaction in which ring molecules, particularly cyclic
ketone molecules, participate or are produced, the titanium silicalite molecular
sieve can achieve excellent catalytic effects. Moreover,
filtration and separation of the catalyst after the reaction can be further facilitated, and industrialized application is easily realized.