Method for preparing cyclohexanol and cyclohexanone through cyclohexane oxidation

A technology of cyclohexane and cyclohexanol, which is applied in the direction of oxidation reaction preparation, chemical instruments and methods, and carbon-based compound preparation. It can solve the problems of non-reusable use, high catalyst cost, and harsh use conditions, and achieve reusability. Good, simple catalytic system, easy to separate effect
CN101747142AInactive Publication Date: 2010-06-23LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing cyclohexanol and cyclohexanone through cyclohexane oxidation catalyzed by molecular oxygen. The invention uses the cyclohexane as a reactant, the oxygen as an oxidant and nanoferrite as a catalyst, and any organic solvent or additive are not added during the reaction process. After the reaction, the separation of the catalyst and the product can be realized through simple filtration, the catalyst can be recycled without any loss of the catalytic activity, the conversion rate is over 12%, and the selectivity of the cyclohexanol and cyclohexanone is over 92%.
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Description

technical field

[0001] The invention relates to a method for preparing cyclohexanol and cyclohexanone by oxidizing cyclohexane with catalytic molecular oxygen. Background technique

[0002] The oxidation products of cyclohexane, cyclohexanol and cyclohexanone, are in great demand as raw materials for the production of adipic acid and caprolactam, which are the raw materials for the production of nylon-6 and nylon-66. At present, more than 95% of cyclohexanone in the world is produced by Dutch Mining Company (DSM) technology. This technology is the most mature industrial technology at present, but the conversion rate of cyclohexane is only 3.5-4.2%, the selectivity is only 76-81%, the production efficiency is low, and a lot of resources are wasted. Therefore, the research on the oxidation of cyclohexane has always been a very challenging research topic in the field of catalysis. The reported catalysts are: V 2 o 5 -TiO 2 , mononuclear bipyridyl copper complexes, metal-co...

Claims

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