Method for synthesizing titanium-silicon materials with mesoporous and microporous structures

Abstract

The invention provides a method for synthesizing titanium-silicon materials with mesoporous and microporous structures, which is characterized by comprising the following steps of: adding a titanium sThe invention provides a method for synthesizing titanium-silicon materials with mesoporous and microporous structures, which is characterized by comprising the following steps of: adding a titanium source and a silicon source to the water solution of organo-alkali compound respectively under the ultrasonic agitation to obtain two solutions after homogeneous mixing; and then mixing the two solutioource and a silicon source to the water solution of organo-alkali compound respectively under the ultrasonic agitation to obtain two solutions after homogeneous mixing; and then mixing the two solutions evenly under the ultrasonic agitation; mixing the mixture with the water solution of a surface active agent evenly under the ultrasonic agitation to obtain a mixture with the mole ratio of siliconns evenly under the ultrasonic agitation; mixing the mixture with the water solution of a surface active agent evenly under the ultrasonic agitation to obtain a mixture with the mole ratio of siliconsource: titanium source: organic base: surface active agent: water equals to 1: (0.001-0.5) : (0.05-0.8) : (0.05-0.5) : (5-200); putting the mixture into a sealed reaction kettle for hydrothermal cryssource: titanium source: organic base: surface active agent: water equals to 1: (0.001-0.5) : (0.05-0.8) : (0.05-0.5) : (5-200); putting the mixture into a sealed reaction kettle for hydrothermal crystallization; and then collecting the obtained titanium-silicon material. The titanium-silicon material synthesized by the method has good catalytic oxidation property and better effect on the oxidatiotallization; and then collecting the obtained titanium-silicon material. The titanium-silicon material synthesized by the method has good catalytic oxidation property and better effect on the oxidation reactions in the presence of large molecules.n reactions in the presence of large molecules.

Description

technical field [0001] The invention relates to a synthesis method of an inorganic material, and furthermore relates to a synthesis method of a titanium-silicon material with a mesoporous and microporous structure. Background technique [0002] Titanium-silicon molecular sieve is a new type of heteroatom molecular sieve developed in the early 1980s. At present, Ti-ZSM-5 with MFI structure, namely TS-1, TS-2 with MEL structure, and TS-48 with larger pore structure have been synthesized. TS-1 molecular sieve is a new type of titanium-silicon molecular sieve with excellent directional oxidation catalytic performance formed by introducing the transition metal element titanium into the molecular sieve framework with ZSM-5 structure. TS-1 molecular sieve not only has the catalytic oxidation of titanium, but also It also has the shape-selective effect of ZSM-5 molecular sieve and excellent stability. However, the microporous structure of TS-1 molecular sieve is about 0.55 nanomet...

AI Technical Summary

Problems solved by technology

[0006] CN1226187C has reported the titanium-silicon molecular sieve composite material with above-mentioned two kinds of structures and its preparation method, has certain catalytic activity, but the main problem that it exists is that its mentioned composite material pore size is single (diffraction in X-ray diffraction spectrogram figure The peak position is strictly limited), and the steps in its preparation method are relatively complicated, and there are environmental and cost burdens

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