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Method for producing mono-hydrogen peroxide diisopropylbenzene

A technology of dicumyl hydrogen peroxide and dicumyl benzene is applied in the field of producing dicumyl hydrogen peroxide, can solve the problems of low product yield and high cost of additives, and achieves improving product yield and reducing additives. cost, and the effect of increasing the oxidation reaction rate

Active Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art has the problems of high additive cost and low product yield, and a new method for producing dicumyl monohydroperoxide is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 5% by weight of hydrochloric acid was used as a pH adjuster to adjust the pH of the reaction material to 1.60, the reaction pressure in the oxidation reactor was 1.2 MPa, the reaction temperature was 200° C., and the mass ratio of dicumyl to air was 3.33. Dicumyl and air are oxidized in the oxidation reactor to produce dicumyl hydroperoxide MHP.

[0012] The residence time is 24.0 hours, the product yield is 20.40% by weight, and the cost of the added pH regulator is 33.0 yuan / kg of MHP.

Embodiment 2

[0014] Same as [Example 1], except that the pH regulator used is 10% by weight of sulfuric acid to adjust the pH of the reaction material to 1.40.

[0015] The residence time is 24.0 hours, the product yield is 21.25% by weight, and the cost of the added pH regulator is 33.9 yuan / kg of MHP.

Embodiment 3

[0017] Same as [Example 1], except that the pH regulator used is 10% by weight of NaOH, and the pH of the reaction material is adjusted to 11.68.

[0018] The residence time is 24.0 hours, the product yield is 18.12% by weight, and the cost of the added pH regulator is 32.1 yuan / kg MHP.

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PUM

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Abstract

The invention relates to a method for producing mono-hydrogen peroxide diisopropylbenzene, which solves problems of high additive cost and low product yield in the prior art. According to the invention, the problems are preferably solved through the adoption of the technical scheme as follows: raw materials diisopropylbenzene and air react with each other under conditions that the reaction temperature is 60-240 DEG C, the reaction pressure is 0.2-1.6 MPa, the weight ratio between the diisopropylbenzene and the air is (10-20):3 and the pH value of the reaction materials is 1.0-3.0 or 10.0-13.8, so as to obtain the mono-hydrogen peroxide diisopropylbenzene; and the method for producing the mono-hydrogen peroxide diisopropylbenzene, provided by the invention, can be used for the industrial production of the mono-hydrogen peroxide diisopropylbenzene.

Description

technical field [0001] The present invention relates to a kind of method of producing dicumyl monohydroperoxide. Background technique [0002] Dicumyl monohydroperoxide (MHP) is an intermediate product in the production of bis-(tert-butylperoxyisopropyl)benzene (BIPB). Documents US5981805, JP2007217399 and JP2007039435 disclose dicumyl as a starting material, oxidized with air and add a water-soluble iron-containing compound to increase the oxidation rate to obtain dicumyl-hydroperoxide MHP, and further perform a series of reactions to obtain Bis-(tert-butylperoxyisopropyl)benzene BIPB product. [0003] However, the preparation of dicumyl hydroperoxide MHP in the above-mentioned documents must add a water-soluble iron-containing compound in the dicumene raw material to increase the oxidation rate. However, in the actual production process, due to the use of water-soluble iron-containing compound additives, there are problems of high additive cost and low product yield. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C409/08C07C407/00
Inventor 杨建平郑晓栋陈泱陈为群何琨
Owner CHINA PETROLEUM & CHEM CORP
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