Study on the azeotrope of ethyl acetate and ethanol
If you want to study the azeotrope of ethyl acetate and ethanol, you need to investigate the physical properties in detail. Ethyl acetate has an aromatic taste, a colorless and transparent liquid, and is widely used in various fields of chemical industry. Ethanol, a common alcohol, is also a colorless and volatile liquid, and has many uses.

When the two meet, they form an azeotropic state. For an azeotrope, under a specific temperature and pressure, the composition of the gas phase and the liquid phase remains constant. When ethyl acetate and ethanol are azeotropic, the temperature is about 71.8 ° C, which is lower than the boiling point of the two alone.

The cause is due to the intermolecular force. The carbonyl group of ethyl acetate and the hydroxyl group of ethanol can form hydrogen bonds, resulting in enhanced interaction. When the mixture is heated, the molecular motion intensifies. However, due to the binding of hydrogen bonds, some ethyl acetate and ethanol molecules are synergistically vaporized to form an azeotrope.

To separate this azeotrope, it is difficult to use traditional distillation methods. Because of its azeotropic properties, simply heating and distilling, the resulting distillate is always composed of azeotropes. Therefore, special methods are required, such as adding a suitable entrainer to change the gas-liquid equilibrium relationship, in order to achieve the purpose of separation.

Or extract distillation is used, and an extractant with strong interaction with ethyl acetate or ethanol is selected to add to the mixed system. The extractant can selectively change the volatility of a certain group of components to eliminate the azeotrophy phenomenon, and then achieve separation.

Furthermore, membrane separation technology is also a feasible way. Using special membrane materials to separate the permeability difference between ethyl acetate and ethanol, the separation of the two can be achieved. These methods have their own advantages and disadvantages, and the application should be carefully selected according to the actual situation.

In industrial production and scientific research practice, it is crucial to clarify the properties and separation methods of ethyl acetate and ethanol azeotrope. It can optimize the production process, improve product purity, and save resources, which is of great significance to the development of the chemical industry.