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[Chemical Knowledge]：Production and manufacturing method and process of isobutylene alcohol

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Manufacturing method
of isobutylene alcohol
Isobutylene alcohol is an important organic chemical raw material, which is widely used in fine chemical industry, medicine, pesticide and other fields. This paper will introduce the manufacturing method of isobutylene alcohol, including raw material preparation, reaction process, post-treatment and other process steps.

1. Feedstock Preparation

The main feedstocks for the manufacture of isobutylene alcohols are isobutylene and formaldehyde. Among them, isobutylene can be obtained by petroleum cracking or natural gas conversion, and formaldehyde can be prepared by methanol oxidation. In the process of raw material preparation, it is necessary to ensure the purity and quality of raw materials to avoid adverse effects on subsequent reactions.

2. Reaction Process
The manufacturing process of
isobutylene alcohol mainly includes two steps: addition reaction and hydrogenation reaction. The specific steps are as follows:

1. Addition reaction

Under the action of an acidic catalyst, isobutylene and formaldehyde undergo an addition reaction to generate 3-methyl-3-butene-1-ol. The reaction is generally carried out at a relatively low temperature to avoid side reactions. Commonly used acidic catalysts include sulfuric acid, phosphoric acid, and the like.

2. Hydrogenation Reaction

3-methyl-3-buten-1-ol is subjected to hydrogenation reaction to obtain isobutylene alcohol. The hydrogenation reaction is generally carried out in the presence of high-pressure hydrogen, and the catalyst is a noble metal catalyst, such as palladium/carbon, platinum/carbon, etc. The hydrogenation reaction can reduce the double bond to a single bond while keeping the alcoholic hydroxyl group unreduced.

3. post-treatment
After the end of the
reaction, it is necessary to post-treat the product in order to obtain isobutene alcohol of higher purity. The post-treatment process includes distillation, washing, drying and the like to remove impurities and moisture. At the same time, the equipment needs to be cleaned and maintained to ensure the normal operation of the equipment and the quality of the product.

4. precautions

In the process of manufacturing isobutylene alcohol, the following matters need to be paid attention to:

1. Strictly control the quality and purity of raw materials to avoid adverse effects on subsequent reactions;
2. According to specific reaction conditions and Equipment conditions, select the appropriate reaction temperature and pressure;
3. In the addition reaction and hydrogenation reaction, it is necessary to select the appropriate catalyst and reaction conditions, in order to improve the selectivity and yield of the product;
4. In the post-processing process, it is necessary to ensure the purity and quality of the product to avoid adverse effects on the application of the product;
5. In the production process, it is necessary to strengthen equipment maintenance and operation management. Ensure the normal operation of equipment and the safety of employees.

In short, the manufacturing method of isobutylene alcohol involves multiple process steps and precautions, and the operating conditions and parameters of each link need to be strictly controlled to ensure the quality and purity of the product. At the same time, it is necessary to strengthen production management and equipment maintenance to ensure the smooth progress of the production process and the safety of employees.

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