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Method for producing tertiary carboxylic acid

A production method and technology of tertiary carbonic acid, applied in the chemical industry, can solve the problems of large discharge of dilute sulfuric acid, environmental pollution, and difficulty in separating catalysts and products, and achieve the effects of small loss, less discharge of "three wastes" and avoiding poor separation effect.

Active Publication Date: 2012-10-10
SOUTHWEST RES & DESIGN INST OF CHEM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and efficient production process for tertiary carbonic acid containing a total of 5 to 14 carbon atoms, to overcome the existing process catalyst and product separation difficulties, large dilute sulfuric acid discharge, serious environmental pollution defects

Method used

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  • Method for producing tertiary carboxylic acid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 6 moles of concentrated sulfuric acid with a mass concentration of 85% into the catalyst preparation kettle with a mechanical pump, add 0.2 moles of cuprous oxide under stirring conditions, feed carbon monoxide into the catalyst preparation kettle, keep the pressure in the kettle at 2~3MPa, and continuously After stirring for 5 hours, a gray transparent liquid was obtained, namely concentrated sulfuric acid-copper carbonyl catalyst. Add the concentrated sulfuric acid-copper carbonyl catalyst prepared in the previous step to the 2-liter high-pressure preparation kettle, pass through carbon monoxide, pressurize to raise the pressure of the kettle to 1.0 MPa, start the stirrer at a speed of 600 rpm, and maintain the temperature in the kettle at 15°C , then open the feed pump, inject 0.5 moles of nonene per hour into the kettle, add it in two hours, then react for 20 minutes, transfer the reaction solution to the first mixer and mix with 160 milliliters of n-hexane, extr...

Embodiment 2

[0026]Put 6 concentrated sulfuric acid with a molar mass concentration of 87% into the catalyst preparation kettle with a mechanical pump, add 0.05 moles of cuprous oxide under stirring conditions, and feed carbon monoxide into the catalyst preparation kettle, keep the pressure in the kettle at 1-2 MPa, and continuously After stirring for 1 hour, a gray transparent liquid was obtained, namely concentrated sulfuric acid-copper carbonyl catalyst. Add the concentrated sulfuric acid-copper carbonyl catalyst prepared in the previous step to the 2-liter high-pressure reaction kettle, pass carbon monoxide, pressurize to raise the pressure of the kettle to 3 MPa, start the stirrer at a speed of 600 rpm, and maintain the temperature in the kettle at 20°C , then open the feed pump, inject 0.25 moles of nonene per hour in the still, add it in two hours, then after reacting for 60 minutes, the reaction solution is transferred to the first mixer and mixed with 80 milliliters of chlorobenzen...

Embodiment 3（ Embodiment 2

[0027] Embodiment 3 (embodiment 2 comparative embodiment)

[0028] Put 6 concentrated sulfuric acid with a molar mass concentration of 87% into the catalyst preparation kettle with a mechanical pump, add 0.05 moles of cuprous oxide under stirring conditions, and feed carbon monoxide into the catalyst preparation kettle, keep the pressure in the kettle at 1-2 MPa, and continuously After stirring for 2 hours, a gray transparent liquid was obtained, namely concentrated sulfuric acid-copper carbonyl catalyst. Add the concentrated sulfuric acid-copper carbonyl catalyst prepared in the previous step to the 2-liter high-pressure reaction kettle, pass carbon monoxide, pressurize to raise the pressure of the kettle to 3MPa, start the stirrer at a speed of 600 rpm, and maintain the temperature in the kettle at 20°C. Then open the feed pump, inject 0.25 moles of nonene per hour in the kettle, add it in two hours, and after reacting for 60 minutes, the reaction solution is transferred to ...

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Abstract

The invention provides a method for producing a tertiary carboxylic acid. The method is a simple and efficient technology for producing a tertiary carboxylic acid. The method solves the problem that the existing production technology has the defects of difficult separation of a catalyst and a product, large discharge quantity of dilute sulfuric acid and severe environmental pollution. An olefin, water and carbon monoxide as raw materials undergo a synthesis reaction in the presence of a concentrated acid-carbonyl copper catalyst to produce a tertiary carboxylic acid. An improved reaction separation method is adopted and thus a catalyst loss is low and discharged three wastes are reduced. A product tertiary carboxylic acid and the catalyst can be separated only through utilization of water of which an amount is less than or equal to an amount of water needed by a reaction and thus the catalyst can be directly recycled and the problem that the prior art has the defects of poor separation effects, large dilute sulfuric acid discharge quality and serious dilute sulfuric acid pollution is solved.

Description

technical field [0001] The invention relates to a production method of tertiary carbonic acid, which belongs to the field of chemical industry. Background technique [0002] Tertiary carbonic acid is an important class of chemical raw materials. Since there are three hydrocarbon groups connected to the α-carbon atom connected to the carboxylic acid, the steric hindrance is large, and its acidity, melting point and boiling point are lower than those of the corresponding primary and secondary carbonic acid, and its chemical properties are more stable. However, once reacted, its derivatives The properties are also more stable, and it is precisely because of this feature that it plays a pivotal role in the industry. It can not only replace some uses of natural fatty acids in industry, but also has special properties incomparable to natural fatty acids. Coatings made of glycidyl esters and vinyl esters derived from it have excellent weather resistance and heat resistance, and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/128C07C51/14C07C51/48
CPCY02P20/584
Inventor 张华西曾健廖炯毛震波吴路平李荣成雪清王航
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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