A preparing method of methylcyclopentane

A technology of methylcyclopentane and cyclohexane, which is applied in the field of methylcyclopentane preparation, can solve the problems of harsh operating conditions and long process, and achieve the effect of mild reaction conditions and good technical effects

Active Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • 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 the harsh operating conditions and long technical problems ...

Method used

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  • A preparing method of methylcyclopentane

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Experimental program
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Effect test

Embodiment 1

[0019] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) catalyst, the reaction temperature is 100 ° C, with cyclohexane 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 cyclohexane after 24 hours of reaction is 34.1%, and the product selectivity of methylcyclopentane is 98.5%.

[0020] For ease of comparison, the main process conditions and reaction results are listed in Table 1.

Embodiment 2

[0022] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) catalyst, the reaction temperature is 70 ° C, with cyclohexane as the reaction raw material, the reaction raw material and AlCl 3 The weight ratio is 3, the stirring speed is 800 rpm, the conversion rate of cyclohexane after 18 hours of reaction is 22.4%, and the product selectivity of methylcyclopentane is 98.9%.

[0023] For ease of comparison, the main process conditions and reaction results are listed in Table 1.

Embodiment 3

[0025] In a 50ml closed tank reactor, in anhydrous aluminum chloride (AlCl 3 ) catalyst, the reaction temperature is 50 ° C, with cyclohexane as the reaction raw material, the reaction raw material and AlCl 3 The weight ratio is 1, the stirring speed is 1000 rpm, the conversion rate of cyclohexane after 20 hours of reaction is 15.2%, and the product selectivity of methylcyclopentane is 99.1%.

[0026] For ease of comparison, the main process conditions and reaction results are listed in Table 1.

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Abstract

The invention relates to a preparing method of methylcyclopentane, and mainly overcomes technical problems of methylcyclopentane production by hydrogenation in the prior art, namely severe operation conditions and long procedures. According to a technical scheme adopted by the method, a material rich in cyclohexane is adopted as a raw material and is brought into contact with a catalyst at 50-100 DEG C to produce the methylcyclopentane, the catalyst is at least one of anhydrous aluminum halides, 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 used for industrial production of the methylcyclopentane.

Description

technical field [0001] The invention relates to a method for preparing methylcyclopentane. Background technique [0002] Methylcyclopentane can be used as a solvent and a standard substance for chromatographic analysis, as well as for organic synthesis. [0003] Methylcyclopentane can be obtained by direct distillation and separation of C6 solvent oil, but C6 solvent oil also contains many compounds with a boiling point close to that of methylcyclopentane, which results in high energy consumption for the separation of methylcyclopentane , the yield is low, and the purity of the methylcyclopentane product is not high. In addition, methylcyclopentane can also be obtained by hydrogenation of methylcyclopentadiene, and methylcyclopentadiene is obtained by depolymerization and rectification of methyldicyclopentadiene, so hydrogenation of methylcyclopentadiene The method for preparing methylcyclopentane has harsh operating conditions and a long flow process. CN102399121 disclos...

Claims

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Application Information

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IPC IPC(8): C07C5/29C07C13/10
Inventor 王德举刘仲能王辉郭友娣黄琴琴
Owner CHINA PETROLEUM & CHEM CORP
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