Titanium silicalite molecular sieve doped with framework Fe in situ as well as preparation method and application of titanium silicalite molecular sieve

The invention provides a titanium silicalite molecular sieve doped with framework Fe in situ as well as a preparation method and application of the titanium silicalite molecular sieve. The preparation method of the in-situ framework Fe doped titanium silicalite molecular sieve comprises the following steps: irradiating a mixed solution containing an organic template agent, a silicon source and a titanium source with a light source containing ultraviolet light to obtain a first mixed solution; mixing an iron source and a ligand to obtain a second mixed solution; dropwise adding the second mixed solution into the first mixed solution to obtain a third mixed solution, and crystallizing the third mixed solution to obtain the titanium silicalite molecular sieve. According to the preparation method provided by the invention, the titanium silicalite molecular sieve doped with the framework Fe in situ can be synthesized, and the selectivity of catalyzing the epoxidation reaction of 1-hexene is improved. 本发明提供一种原位掺杂骨架