Ti-MWW molecular sieve synthesizing method

The invention discloses a Ti-MWW molecular sieve synthesizing method, which comprises the following steps: 1) uniformly mixing a substrate silicon source, boric acid, an organic template agent, water and sodium hydroxide, and crystallizing for 10-30 hours at 120-170 DEG C so as to obtain an MWW precursor; 2) placing the MWW precursor into ice-water bath for shock cooling, treating with a colloid mill, slowly adding a titanium source under the condition of ice-water bath, stirring uniformly, recrystallizing for 20-50 hours, then cooling, filtering, washing and drying to obtain a product, namely Ti-MWW raw powder; 3) exchanging the Ti-MWW raw powder and an ammonium solution, removing sodium out of a framework, suction-filtering, drying and roasting to obtain a Ti-MWW molecular sieve product. The synthesizing method disclosed by the invention is high in titanium source usage, the synthesized Ti-MWW molecular sieve does not contain non-framework titanium, and the catalytic activity is high; an inorganic base is a