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[Chemical Knowledge]：Production and manufacturing method and process flow of cyclohexanone

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of the manufacturing method
of cyclohexanone Cyclohexanone is an important organic chemical raw material, which is widely used in the production of nylon, caprolactam and adipic acid. The following are several major manufacturing methods of cyclohexanone.

1. cyclohexanol dehydrogenation method
cyclohexanol dehydrogenation method is the main method for the production of cyclohexanone, the process to cyclohexanol as raw material, through the catalytic dehydrogenation reaction to generate cyclohexanone. The dehydrogenation reaction is usually carried out at a high temperature and a low pressure, using a metal oxide such as copper, zinc, aluminum or the like as a catalyst. It is necessary to control the temperature and pressure during the reaction to maintain high conversion and selectivity.
2. Cyclohexane Oxidation Method
Cyclohexane oxidation method is a traditional cyclohexanone production method. The process uses cyclohexane as raw material, generates a mixture of cyclohexanol and cyclohexanone through oxidation reaction, and then obtains pure cyclohexanone through distillation. The oxidation reaction usually uses air or oxygen as an oxidant, the reaction temperature is relatively high, and the reaction conditions need to be strictly controlled to avoid the formation of by-products.
3. Phenol hydrogenation
Phenol hydrogenation is a less used cyclohexanone production method, which uses phenol as raw material and generates cyclohexanone through hydrogenation reaction. The hydrogenation reaction usually uses metal catalysts such as nickel and cobalt, and the reaction conditions are relatively mild. However, due to the higher phenol price, this method is economically inferior to the previous two methods.

No matter which method is used, the production of cyclohexanone requires strict control of reaction conditions to ensure product quality and yield. At the same time, the waste and by-products generated in the production process also need to be properly disposed of to avoid harm to the environment and human body.

In short, there are many manufacturing methods of cyclohexanone, and different methods have different advantages and disadvantages and scope of application. When choosing a production method, it is necessary to comprehensively consider the source of raw materials, production costs, environmental protection requirements and other factors to choose the most suitable production process.

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