Synthesis route of adipic acid

Adipic acid synthesis route
Adipic acid is an important organic chemical raw material, mainly used for the production of chemical products such as polycaprolactam, polyester, fluorescent whitening agent, etc. There are many synthetic routes for adipic acid, and the following are some of the main synthetic routes:
1. The hexane oxidation method
The hexane oxidation method is currently the most commonly used method for synthesizing adipic acid. The specific steps are: oxidize hexane to cyclohexanone, and then convert cyclohexanone to adipic acid through oxidation reaction. During the reaction process, oxidants such as hydrogen peroxide and oxygen are required.
2. Cyclohexanone Dimerization
Cyclohexanone dimerization, also known as the Wacker process, is another method for synthesizing adipic acid. The specific steps are: in the presence of cyclohexanone catalyst, dimerization reaction occurs at a certain temperature and pressure to produce adipic acid. Although this method requires a catalyst, the reaction process is simpler compared to the hexane oxidation method.
3. Acetylene method
Acetylene method is a traditional method for synthesizing adipic acid. The specific steps are: reacting acetylene and water in the presence of cobalt catalyst to produce propargyl alcohol, and then converting propargyl alcohol to adipic acid through acidification reaction. However, this method has higher production costs due to the use of precious metal catalysts such as cobalt.