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Preparation method of diisobutyl carbinol

A technology of diisobutylmethanol and diisobutyl ketone, which is applied in the field of preparation of diisobutylmethanol, can solve problems such as difficult separation of solvent products, high acid value of products, and cumbersome synthesis process

Inactive Publication Date: 2015-02-18
YUEYANG ZHONGSHUN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that diisobutyl ketone has not yet been produced on a large scale; in the existing diisobutyl carbinol synthesis method, continuous operation at low temperature is required, the separation of solvent products is difficult, the acid value of the product is high, and the synthesis process is cumbersome, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 500 grams of diisobutyl ketone to the reaction kettle, add 20 grams of Raney nickel catalyst, and pass in excess (the excess is continuously passed in) 99.999% of high-purity hydrogen for reaction to generate diisobutyl methanol The reaction temperature is 100°C, the reaction pressure is 0.8 MPa, and the reaction time is 17 hours. After the reaction, the liquid is filtered to obtain the diisobutyl methanol product, and the hydrogenation yield is over 99%.

[0014]

Embodiment 2

[0016] Add 500 grams of diisobutyl ketone to the reaction kettle, add 20 grams of Raney nickel catalyst, and pass in excess (the excess is continuously passed in) 99.999% of high-purity hydrogen for reaction to generate diisobutyl methanol , The reaction temperature is 200°C, the reaction pressure is 0.8 MPa, and the reaction time is 12 hours. After the reaction, the liquid is filtered to obtain the diisobutyl methanol product, and the hydrogenation yield is over 99%.

[0017]

Embodiment 3

[0019] Add 500 grams of diisobutyl ketone to the reaction kettle, add 20 grams of Raney nickel catalyst, and pass in excess (the excess is continuously passed in) 99.999% of high-purity hydrogen for reaction to generate diisobutyl methanol The reaction temperature is 260°C, and the reaction pressure is 0.8 MPa. After the reaction, the liquid is filtered to obtain the diisobutyl methanol product, and the hydrogenation yield is over 99%.

[0020]

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PUM

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Abstract

The invention discloses a preparation method of diisobutyl carbinol. The preparation method comprises the following steps: reacting diisobutyl ketone and excessive high-purity hydrogen under the condition of raney nickel catalysis to generate the diisobutyl carbinol, wherein hydrogenation reaction temperature is 100-280 DEG C, the reaction pressure is 0-3.8 MPa, and the reaction time is 2-24 hours; filtering liquid after reaction to obtain a diisobutyl carbinol product, wherein the hydrogenation yield is more than 99%. The preparation method disclosed by the invention has the advantages of safety and reliability in production, high product yield, high purity and easiness for separation and large-scale production.

Description

Technical field [0001] The invention relates to a preparation method of diisobutyl methanol, which belongs to the chemical industry field. Background technique [0002] Hydrogen peroxide is a strong oxidant, widely used in papermaking, chemical synthesis, environmental protection and other fields. Since its decomposition products are water and oxygen, it will not pollute the environment and is called a green chemical product. There are many ways to produce hydrogen peroxide, but the industrial production of hydrogen peroxide is all the anthraquinone method. [0003] In the anthraquinone process for the industrial production of hydrogen peroxide, the most critical link is the hydrogenation of anthraquinone. At this stage, most domestic manufacturers use 2-ethylanthraquinone as a catalyst to produce hydrogen peroxide. In this process, 2-ethylanthraquinone participated in a cyclic reaction process. The reaction mechanism is as follows: 2-ethylanthraquinone dissolved in heavy aromat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/125C07C29/145
CPCC07C29/145
Inventor 陈攀
Owner YUEYANG ZHONGSHUN CHEM
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