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

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The manufacturing method
of resorcinol
1. Introduction

resorcinol, also known as lexic acid or 1,3-benzenediol, is an important organic chemical raw material, widely used in medicine, pesticides, dyes, rubber, plastics, antioxidants and other fields. Due to its unique chemical properties and wide range of applications, the manufacturing method of resorcinol has attracted much attention. This article will detail the manufacturing methods of resorcinol, including chemical synthesis, biological methods and other new methods.

2. Chemical synthesis method

1. Phenol method: phenol as raw material, through sulfonation, alkali fusion, acidification and other steps to produce resorcinol. This process is mature, but a large amount of waste water is produced in the production process, and the environmental protection pressure is high.
2. m-xylene method: using m-xylene as raw material, after oxidation, hydrolysis and other steps to produce resorcinol. The raw materials of this method are easy to obtain, but the production process requires high pressure and high temperature conditions, and the equipment investment is large.

3. biological method

biological method is a method of converting raw materials into resorcinol through microbial metabolism. Compared with the chemical synthesis method, the biological method has the advantages of environmental protection and energy saving, and has gradually become a research hotspot.

1. microbial fermentation method: the use of certain microorganisms can be phenol or its derivatives as a carbon source and energy, through metabolism will be converted to resorcinol. This method has mild conditions, but it is difficult to screen and culture microbial strains.
2. Biocatalysis: The use of enzymes or whole-cell catalysts for specific conversion of substrates to generate resorcinol. This method has the advantages of high selectivity and high yield, but the stability of the catalyst needs to be improved.

4. Other Novel Methods

1. Electrochemical Method: Oxidation of phenol or its derivatives to resorcinol by electrolysis. This method has the advantages of green environmental protection, energy saving and high efficiency, but the equipment investment and operating costs are high.
2. Photocatalytic method: Phenol or a derivative thereof is converted into resorcinol by using a photocatalyst under light irradiation. This method has mild conditions and high selectivity, but the activity of the photocatalyst needs to be improved.

5. conclusion

resorcinol manufacturing methods are varied, including chemical synthesis, biological methods and other new methods. Each method has its own advantages and disadvantages, and the appropriate method should be selected according to the actual situation. With the improvement of environmental awareness and the continuous progress of technology, biological methods and other new methods have gradually become the focus of research, which is expected to realize the green and efficient production of resorcinol in the future.

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