A kind of method that cyclopentene prepares cyclopentyl alcohol through cyclopentyl formate

Abstract

The invention relates to a method for preparing cyclopentyl alcohol from cyclopentene through cyclopentyl formate, comprising a reaction kettle (1), an olefin esterification tower (2), a hydrolysis tower (3), an azeotropic distillation tower (4), Stratifier (5) and formic acid recovery tower (6). Under the autocatalysis of formic acid, the raw material cyclopentene and formic acid undergo an addition reaction to generate cyclopentyl formate, and then cyclopentyl formate and water undergo hydrolysis reaction in a hydrolysis tower equipped with a strong acidic cation exchange resin to generate cyclopentyl alcohol and formic acid , formic acid can also be used as a raw material for the addition reaction. The synthesis route proposed by the invention has the characteristics of mild process conditions, high conversion rate, and environmental friendliness.

Description

technical field

[0001] The invention relates to a method for preparing cyclopentyl alcohol from cyclopentene through cyclopentyl formate. Background technique

[0002] Cyclopentanol is an important intermediate of fine chemical products, mainly used in the preparation of cyclopentanone, bromocyclopentane, chlorocyclopentane, etc., and can be used to manufacture antibacterial and antiallergic drugs. Cyclopentanol can be obtained from adipic acid through high-temperature deacidification to obtain cyclopentanone, and then through hydrogenation reaction. However, due to the large amount of pollutants produced in this process and the constraints of raw material sources, this preparation method has been gradually eliminated. . In the process of producing ethylene from petroleum cracking, a large amount of C5 fraction - dicyclopentadiene will be produced by-product. After depolymerization and selective hydrogenation of dicyclopentadiene, cyclopentene can be obtained. Therefore, t...

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