PTA oxidation reaction
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The last edit to this post was made by Yang@Yang on 2023-3-23 at 22:25; 1 PX reaction requires 3 molecules of oxygen – why is the ratio of PX to air in the oxidation reaction controlled between 4.7 and 5?
The oxidation reaction of PX generally refers to the oxidation of the organic compound PX into its corresponding acid, with air (oxygen) serving as the oxidant required for this reaction. In practical applications, controlling the ratio of the oxidation reaction PX to air can achieve better results. In the air, the oxygen content is about 20-21%, while the nitrogen content is as high as 78-79%. Therefore, when controlling the ratio of PX to air, if it is too low, the nitrogen in the air will result in an insufficient concentration of oxygen, thereby affecting the efficiency of the oxidation reaction involving PX ； If it is too high, it may prevent PX from being completely oxidized to the corresponding acid. Through experiments and practice, it is generally believed that maintaining a ratio of the oxidation reaction PX to air between 4.7 and 5 yields better reaction results. However, the specific control ratio still needs to be reasonably selected based on actual conditions and requirements. .