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[Chemical Knowledge]：Production process and preparation method of isopropanolamine

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Isopropanolamine is a commonly used solvent and intermediate, which is widely used in dyes, coatings, rubber, resins, synthetic fibers and other fields. The purpose of this paper is to introduce the production process and preparation method of isopropanolamine, hoping to provide useful reference for workers in related fields.

The production process of
isopropanolamine is generally divided into two types, one is prepared by oxidizing isopropanol, and the other is prepared by the oxidation of ammonia and propanol.

, the method for preparing isopropanolamine by oxidizing isopropanol is relatively simple, and the specific steps are as follows:
1. placing isopropanol into a reaction kettle, and heating the reaction kettle to a suitable temperature.
2. During the heating process, hydrogen peroxide was added to the reaction vessel while stirring the reactants to uniformly mix them.
3. After the reaction is allowed to proceed for a period of time, the heating is stopped. After the reaction was cooled, the product in the reaction vessel was filtered to obtain isopropanolamine.
the advantages of this method are simple process, low equipment requirements, but the production of oxidation by-products, there is a risk of explosion.
the preparation of isopropanolamine by the hydroxide reaction of ammonia and propanol is relatively complicated, the product purity is high and no oxidation by-products are formed. The specific steps are as follows:
1. the propanol and ammonia are mixed and added into the reaction kettle.
2. The reactants are brought to the appropriate temperature by heating while an oxidizing agent, such as hydrogen peroxide or diformyl peroxide, is added.
3. The reactants are reacted at a temperature and pressure for a period of time until the reaction is complete.
4. After completion of the reaction, the product is isolated and purified by evaporation or extraction to obtain isopropanolamine. Although the process methods for the preparation of isopropanolamine
are different, the key steps are similar. In practical applications, different preparation methods can be selected according to different requirements.

in addition, the preparation of isopropanolamine also needs to pay attention to the following issues:
1. Equipment selection and explosion-proof measures. Because explosive gases may be generated during the preparation of isopropanolamine, it is necessary to select suitable equipment and carry out explosion-proof treatment on the reactor.
2. Raw material selection and purity requirements. In the preparation of isopropanolamine, the selection and purity of raw materials are very important. The quality of different raw materials will affect the quality and yield of the prepared product.
3. Control of reaction conditions. In the process of preparing isopropanolamine, it is necessary to strictly control the reaction temperature, pressure, oxidant addition and reaction time to ensure the purity and utilization of the product.
In conclusion, isopropanolamine is an important chemical with a wide range of applications in many industries. Through the introduction of this article, workers can understand the production process and preparation method of isopropanolamine, improve the preparation technology and product quality, and contribute to the development of related fields.

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