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[Chemical Knowledge]：Production method and process of octanol

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The manufacturing method
of octanol
1. Introduction

octanol is an important chemical production raw material, widely used in coatings, plastics, spices, medicine and other fields. With the continuous growth of market demand, the manufacturing method of octanol has become a research hotspot. This article will introduce the manufacturing method of octanol in detail, including raw material preparation, reaction process, post-treatment and so on.

2. Feedstock Preparation
The production of
octanol requires the preparation of the following feedstocks: propylene, synthesis gas (CO and H2), catalyst. Among them, propylene can be produced by methods such as petroleum cracking or propane dehydrogenation, and synthesis gas can be converted from hydrocarbons such as natural gas and coal. The catalyst is generally selected from acidic catalysts, such as sulfuric acid, phosphoric acid, etc.

3. reaction process The manufacture of

octanol is mainly realized by olefin oxo synthesis reaction, and the specific steps are as follows:

1. Under the action of catalyst, propylene and synthesis gas undergo oxo synthesis reaction to generate propionaldehyde.
2. Propionaldehyde and synthesis gas under the action of catalyst, the carbonyl synthesis reaction occurs again to generate n-butyraldehyde.
3. n-Butyraldehyde and synthesis gas are hydrogenated under the action of a catalyst to produce n-butanol.
4. n-Butanol is esterified with water under the action of acidic catalyst to generate ethyl butyrate.
5. Ethyl butyrate in the role of alkaline catalyst, alcoholysis reaction, the formation of octanol.

4. post-treatment
After the end of the
reaction, the product needs to be post-treated to obtain pure octanol. The specific steps are as follows:

1. Distilling the reaction liquid to separate unreacted raw materials and by-products.
2. Absorb the acidic substance in the reaction solution with a basic absorbent.
3. The reaction solution is washed with water to remove salts and impurities therein.
4. The washed reaction solution is distilled to obtain pure octanol.
Precautions for
5.

1. During the operation, the reaction temperature and pressure should be strictly controlled to ensure the smooth progress of the reaction.
2. In the post-processing process, appropriate absorbents and detergents should be selected to ensure the purity of the product.
3. In the production process, attention should be paid to safety to avoid accidents such as leakage and fire.

6. conclusion The manufacturing method of

octanol mainly includes the steps of raw material preparation, reaction process and post-treatment. By controlling the reaction conditions and selecting a suitable post-treatment method, a high-purity octanol product can be obtained.

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