Aluminum modified Fe3O4 magnetic material and preparing method and application thereof

A magnetic material and aluminum modification technology, which is applied in the field of aluminum modified Fe3O4 magnetic catalyst and its preparation, can solve the problems of poor reusability and low catalyst activity, and achieve good reusability, high catalytic activity and easy magnetic separation and the effect of recycling
CN105921152AInactive Publication Date: 2016-09-07WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2016-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an aluminum modified Fe3O4 magnetic material and a preparing method and application thereof and belongs to the fields of preparation and organic catalysis of magnetic catalysts. The aluminum modified Fe3O4 magnetic material is obtained through in situ synthesis by means of the solvothermal method, and is used as a catalyst to catalyze H2O2 in a water phase and oxidize benzyl alcohol selectively so as to prepare benzaldehyde. The raw materials of the prepared catalyst are cheap and easy to obtain, and operation is easy and convenient. A catalytic reaction system for synthesizing benzaldehyde is environmentally friendly, the yield of benzaldehyde is high (43.7%), and magnetic separation recovery and regeneration cyclic use of the catalyst are easy to achieve; furthermore, no byproduct containing chlorine exists in benzaldehyde, so that application in the fields such as spice and medicine is possible, and application prospects are broad.
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Description

technical field

[0001] The invention belongs to the field of preparation of magnetic catalysts and organic catalysis, in particular to an aluminum modified Fe 3 o 4 Magnetic catalyst and its preparation method and application. Background technique

[0002] Benzaldehyde is an important fine chemical intermediate, which is widely used in chemical industry, fragrance and medicine industries, among which the demand of medicine, fragrance and other industries accounts for 80% of the total demand. At present, the method for industrial synthesis of benzaldehyde is mainly toluene chlorination and hydrolysis, but the benzaldehyde produced by this method contains chlorine, which limits the application in perfumery and medicine. Therefore, it is urgent to develop a new process for the production of chlorine-free benzaldehyde.

[0003] Selective oxidation of benzyl alcohol produces benzaldehyde. From benzyl alcohol-H 2 o 2 -Fe 3 o 4 -H 2 The liquid-phase catalytic system compose...

Claims

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