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[Chemical Knowledge]：Production process and preparation method of tert-amyl alcohol

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Tert-amyl alcohol is an important organic compound, which can be widely used in the synthesis of fragrances, coatings, pesticides and other fields. This article will introduce the production process and preparation method of tert-amyl alcohol.

1. production process

tert-amyl alcohol production process mainly has three kinds: carbon oxidation reaction method, isoprene hydrogenation method and ethanol isomerization method.

1. carbon oxidation reaction method

carbon oxidation reaction method is the most commonly used tert amyl alcohol production process. Under high temperature and high pressure, ethylene and carbon are oxidized to acetylene, and then hydrogen is added to prepare propylene. Next, propylene and carbon monoxide are reacted under the action of cobalt catalyst to generate tert-butyraldehyde, and then through hydrogenation reduction, tert-amyl alcohol with a purity of more than 98% can be obtained.

2. Isoprene Hydrogenation

Isoprene hydrogenation is the preparation of tert-amyl alcohol by the hydrogenation reaction of isoprene. In the hydrogenation reaction, isoprene is first hydrogenated to form isopentane, and then through the decomposition and alcohol decomposition reaction, to produce tert-butyl alcohol and tert-amyl alcohol.

3. Ethanol isomerization method

Ethanol isomerization method is to generate tert-amyl alcohol by changing the structure of ethanol in the molecule under the condition of high temperature and high pressure. The product produced by this method is of low purity and requires separation and purification.

2. Preparation Methods There are two main methods for the preparation of

tert-amyl alcohol: chemical synthesis and biological synthesis.

1. Chemical synthesis

Chemical synthesis is the conversion of raw materials into tert-amyl alcohol through a chemical reaction. The preparation is usually carried out using a carbon oxidation reaction method or an isoprene hydrogenation method. This method can quickly and efficiently prepare high-purity tert-amyl alcohol, but the production cost is relatively high.

2. Biosynthesis

biosynthesis is the conversion of raw materials into tert-amyl alcohol through the metabolism of microorganisms. For example, the use of plant alcohol fermentation products-maltose, through microbial isomerization reaction, you can get high purity tert-amyl alcohol. This method has the advantages of low cost, safety and environmental protection, but the production efficiency is low.

3. summary

tert-amyl alcohol is an important chemical, widely used in perfume, paint, pesticide and other fields. The production process mainly includes carbon oxidation reaction method, isoprene hydrogenation method and ethanol isomerization method, and the preparation method mainly includes chemical synthesis method and biosynthesis method. Different methods have their own advantages and disadvantages, should be selected according to the actual production needs. In the future, with the technological progress and increasing demand, the production process and preparation method of tert-amyl alcohol will be further optimized and improved.