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Synthesis method of n-hexane

A synthesis method, technology of n-hexane, applied in the direction of organic chemistry, isomerization hydrocarbon production, etc., can solve the problem of not being able to separate and obtain n-hexane products, and achieve good technical effects, mild reaction conditions, and high product yields

Active Publication Date: 2018-11-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing n-hexane production is mainly separated from C6 solvent oil, and the technical problem that the n-hexane product with higher purity cannot be separated

Method used

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  • Synthesis method of n-hexane

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Experimental program
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Effect test

Embodiment 1

[0016] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) under the action of a catalyst, the reaction temperature is 100 ° C, with mixed methylpentane as the reaction raw material, the reaction raw material and AlCl 3 The weight ratio is 10, the stirring speed is 1000 rpm, the conversion rate of methylpentane after 24 hours of reaction is 50.1%, and the selectivity of n-hexane product is 95.8%. For the convenience of comparison, the main process conditions and results are listed in Table 1.

Embodiment 2

[0018] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) under the action of a catalyst, the reaction temperature is 70 ° C, with mixed methylpentane as the reaction raw material, the reaction raw material and AlCl 3 The weight ratio is 3, the stirring speed is 800 rev / min, the conversion rate of methylpentane after 18 hours of reaction is 51.7%, and the selectivity of n-hexane product is 97.4%. For the convenience of comparison, the main process conditions and results are listed in Table 1.

Embodiment 3

[0020] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) under the action of a catalyst, the reaction temperature is 50 ° C, with mixed methylpentane as the reaction raw material, the reaction raw material and AlCl 3 The weight ratio is 1, the stirring speed is 1000 rev / min, the conversion rate of methyl pentane after 20 hours of reaction is 60.7%, and the selectivity of n-hexane product is 95.4%. For the convenience of comparison, the main process conditions and results are listed in Table 1.

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Abstract

The invention relates to a synthetic method of n-hexane, and mainly overcomes the technical problems that n-hexane is mainly prepared by separation from C6 solvent oil at present and an n-hexane product with high purity cannot be obtained by separation. According to a technical scheme, a material rich in methylpentane is adopted as a raw material, and the raw material is brought into contact with a catalyst at 50-100 DEG C and reacts to generate the n-hexane, wherein the catalyst is an anhydrous aluminum halide and the weight ratio of the raw material to the catalyst is 1-10. The problems are overcome by adoption of the technical scheme. The method can be applied for industrial production of the n-hexane.

Description

technical field [0001] The invention relates to a method for synthesizing n-hexane. Background technique [0002] n-Hexane is a colorless liquid with low toxicity and a faint special smell. n-Hexane is a chemical solvent, mainly used as a solvent for the polymerization of olefins such as propylene, as an extractant for edible vegetable oil, as a solvent for rubber and paint, and as a thinner for pigments. [0003] N-hexane can be obtained by direct distillation and separation of C6 solvent oil, but C6 solvent oil also contains many compounds close to the boiling point of n-hexane, so the energy consumption of n-hexane separation is high, and the yield is low. The purity is not high. CN101200405 discloses a method for producing hexane solvent oil, which uses 6# solvent oil with a boiling point range of 60-90°C as a raw material, and distills through a rectification tower to obtain a product of n-hexane solvent oil with a content of 95%. CN1351982 discloses a low-temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C9/15C07C5/27
Inventor 王德举黄琴琴刘师前刘仲能张勤
Owner CHINA PETROLEUM & CHEM CORP