Method for modifying titanium-silicon zeolite material

A titanium silicalite modification technology, which is applied in the field of modification of titanium silicalite materials, can solve the problems of easy deactivation, low activity of titanium silicalite, poor selectivity and activity stability, etc., and achieve the improvement of catalytic oxidation activity, good The effect of catalytic activity stability
CN101850985AActive Publication Date: 2010-10-06CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2010-10-06

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Abstract

The invention discloses a method for modifying a titanium-silicon zeolite material. The method comprises the following steps of: adding titanium-silicon zeolite into aqueous solution of pore-forming agent and alkali source, then treating the obtained mixture in a closed reaction kettle under a hydrothermal treatment condition, and reclaiming a product to obtain the modified titanium-silicon zeolite material. According to the modifying method, the titanium-silicon zeolite material is favorable for adsorption and diffusion of the reactants and the product, and the active center thereof is easily contacted. Compared with the prior art, in oxidation reaction, the titanium-silicon zeolite material obtained by adopting the modifying method has the advantages of shortened reaction induction period, high oxidation activity and good stability.
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Description

technical field

[0001] The invention relates to a modification method of a titanium silicalite material. Background technique

[0002] Titanium silicalite is a new type of heteroatom zeolite developed in the early 1980s. At present, TS-1 with MFI structure, TS-2 with MEL structure, MCM-22 with MWW structure and TS-48 with larger pore structure have been synthesized. Among them, the titanium silicalite TS-1 developed and synthesized by Italy Enichem Company is a new type of titanium silicalite with excellent catalytic selective oxidation performance formed by introducing transition metal element titanium into the zeolite framework with ZSM-5 structure. TS-1 not only has the catalytic oxidation effect of titanium, but also has the shape-selective effect and excellent stability of ZSM-5 zeolite. Using this titanium silicalite as a catalyst can catalyze various types of organic oxidation reactions, such as epoxidation of alkenes, partial oxidation of alkanes, oxidation of alco...

Claims

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