Fluorine-containing titanium-silicon molecular sieve with MWW (Manual Wire Wrap) structure and preparation method and application thereof

Abstract

The invention discloses a fluorine-containing titanium-silicon molecular sieve with a MWW (Manual Wire Wrap) structure and a preparation method and an application thereof. In the molecular sieve, a fluorine atom is connected with a framework silicon atom in the form of a chemical bond, an XRD (X-Ray Diffraction) spectrogram contains a characteristic spectral line of the molecular sieve with the MWW structure, and characteristic peaks of -150+ / -5ppm and -143+ / -5ppm appear in a 19FMAS-NMR (19 File Management Assistant For Server-Nuclear Magnetic Resonance) spectrogram; the preparation method comprises the following steps of: synthesizing a boron-containing parent body, post-treating, baking and the like; and the molecular sieve serving as a catalyst is applied to catalytic oxidation reactions of compounds containing carbon-carbon double bonds and at least one other functional group as well as reactions for catalytically synthesizing oxime. The molecular sieve has a complete crystalline state structure; according to the electronic effect of framework fluorine, the molecular sieve and higher catalytic oxidation capability; a preparation process is simple, and is easy for industrial production; synthesis of corresponding epoxides or catalytic synthesis of oxime from compounds containing carbon-carbon double bonds and at least one other functional group can be catalyzed at higher activity and high selectivity; and a reaction process is environmentally-friendly.

Description

technical field [0001] The invention relates to the technical field of inorganic chemical synthesis and chemical application, and relates to a fluorine-containing titanium-silicon molecular sieve with a MWW structure and its preparation method and application, specifically a fluorine-containing titanium-silicon molecular sieve with a MWW structure and a fluorine-implanted molecular sieve framework Molecular sieve and its preparation method and the application of the molecular sieve as a catalyst in catalytic oxidation reaction of compound containing carbon-carbon double bond and at least one other functional group and catalytic synthesis of oxime reaction. Background technique [0002] MWW molecular sieves are a class of molecular sieves with sinusoidal 10-membered ring network pore system, 12-membered ring cavity and supercage pore system structure (Science, Science, 1994, 264:1910). The catalytically active aluminum atoms are introduced into the framework of MWW molecular ...

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Problems solved by technology

The Fourier Transform Infrared (FTIR) characteristic peaks of this titanosilicate are not described in the published patent

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