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

Read： 1973 Time：19months ago Source：Transform the World with Simplicity

Isopropanol is a colorless, transparent liquid, is a commonly used organic solvent. This article will introduce the production process and preparation method of isopropanol in detail.

1. isopropyl alcohol production process of
1. direct hydrolysis method
direct hydrolysis method is isopropyl chloride and water reaction method of isopropyl alcohol. The specific reaction equation is as follows:
(CH3)2CHCOCl H2O → (CH3)2CHOH HCl
This method has the advantage of fast reaction speed, but it needs to use a higher concentration of water to promote the reaction, which will cause the product to be difficult to recover and separate.
2. Reduction of Isopropanal The reduction of
isopropanal is a more commonly used method for the production of isopropanol. The reaction equation is as follows:
(CH3)2CHO H2 → (CH3)2CHOH
The main advantages of this method are mild reaction conditions and high product purity, but the yield is relatively low.
3. Hydrogenation of isopropenyl alcohol Hydrogenation of
isopropenyl alcohol is a widely used method for the production of isopropanol in industry. The specific reaction equation is as follows:
(CH3)2C = CHCH2OH H2 → (CH3)2CHOH
This method has a high yield and is easy to separate and recover the product after the reaction.

2. Method of Preparing
Isopropanol 1. Solution Recrystallization Method One of the methods of preparing
isopropanol is by a solution recrystallization method. Isopropionaldehyde and acetic acid are first added to the aqueous solution, stirred and mixed, sulfuric acid is added, and then cooled to crystallize to obtain isopropanol. This method has a high yield, but the process is complex and requires precise control of the reaction conditions.
2. Hydrogenation Preparation of Propylene The hydrogenation preparation of
propylene is a commonly used method for the production of isopropanol. Propylene is first added to the hydrogenation reactor and hydrogenated with water to produce isopropanol. This method has the advantages of mild reaction conditions and high product purity, but it also has the disadvantages of relatively large catalyst use and complex process.
3. Carbon Dioxide Reduction Method
The carbon dioxide reduction method is a method for producing isopropyl alcohol without using fossil energy. First, dimethyl carbonate and hydrogen are added into the reactor, and the reaction occurs under the action of the palladium catalyst to generate isopropanol. This method has the advantages of less energy consumption and less environmental pollution, but the treatment cost of the exhaust gas in the reaction vessel is higher and the reduction step of the catalyst is more complicated.

the above is the production process and preparation method of isopropanol introduced by us. Through these methods, we can obtain high-quality isopropyl alcohol products to meet the needs of the market.

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