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Preparation method for ultra pure acetone

A technology of acetone and molecular sieve, applied in the separation/purification of carbonyl compounds, organic chemistry, etc., can solve the problems of cumbersome operation, high energy consumption, and low production capacity of high-purity acetone, achieve uniform and stable pore distribution, improve distillation efficiency, The effect of easy operation

Active Publication Date: 2014-02-26
SHANGHAI CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing ultra-pure acetone, so as to overcome the disadvantages of complex operation, low production capacity and high energy consumption in the production of high-purity acetone in the prior art

Method used

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  • Preparation method for ultra pure acetone
  • Preparation method for ultra pure acetone

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Embodiment 1

[0028] Dilute 100g over Na 2 The mesoporous silica adsorbent modified on the surface of EDTA was added to 1000g of industrial acetone, stirred at 25°C for 6 hours, filtered to remove the adsorbent, the obtained filtrate was transferred to a rectification device, and 35g of solid potassium permanganate was added, Total reflux for 2 hours, then collect the distillate at 56.0-56.5°C under the condition of reflux ratio of 2:1 to obtain 920g of acetone, add 100g of 4A molecular sieve, let it stand for 12 hours, filter to remove the molecular sieve, and pass the filtrate through acetate fiber with a pore size of 0.22μm Veterinary ester microporous membrane is filtered, obtains target product ultrapure acetone 890g.

Embodiment 2

[0030] 300g Na 2 The mesoporous silica adsorbent modified on the surface of EDTA was added to 1000g of industrial acetone, stirred at 30°C for 8 hours, filtered to remove the adsorbent, the obtained filtrate was transferred to a rectification device, and 100g of solid potassium permanganate was added, Total reflux for 4 hours, and then collect the fraction at 56.0-56.5°C under the condition of reflux ratio of 1:3 to obtain 900g of acetone, add 180g of 4A molecular sieve, let stand for 8 hours, filter to remove the molecular sieve, and the filtrate passes through acetate fiber with a pore size of 0.22μm Veterinary ester microporous membrane is filtered, obtains target product ultrapure acetone 860g.

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Abstract

The invention discloses a preparation method for ultra pure acetone. The preparation method comprises the following steps removing foreign ions in industrial acetone by using a disodium ethylene diamine tetraacetate surface modified mesoporous silica adsorbent; carrying out distillation in the presence of the oxidizing agent potassium permanganate so as to remove organic impurities; removing water by using a molecular sieve; and carrying out membrane filtration by using a cellulose acetate microporous membrane so as to prepare the target product ultra pure acetone. The ultra pure acetone prepared by using the method has purity of more than 99.5% and water content of less than 0.5%; according to detection results, the contents of foreign ions in the target product are all smaller than index values, and the number of granular impurities with a size of greater than 10 mu m is less than 10ml, according with the standard SEMI C1.2-96.

Description

technical field [0001] The invention relates to a method for preparing ultrapure acetone. The prepared ultrapure acetone can meet the requirements of SEMI C1.2-96 standard for chemical materials formulated by the International Semiconductor Equipment and Materials Organization. Background technique [0002] Acetone is an important raw material for organic synthesis, used in the production of epoxy resin, polycarbonate, plexiglass, medicine, pesticide, etc.; it is also a good solvent, used in coatings, adhesives, acetylene in steel cylinders, etc.; it is also used as a diluent, Cleaning agent, extractant; It is also an important raw material for the manufacture of acetic anhydride, diacetone alcohol, chloroform, iodoform, epoxy resin, polyisoprene rubber, methyl methacrylate, etc. [0003] In the microelectronics industry and semiconductor industry, the purity and cleanliness of acetone have a very important impact on the yield, electrical performance and reliability of elect...

Claims

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Application Information

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IPC IPC(8): C07C49/08C07C45/79C07C45/85
CPCC07C45/79C07C45/85C07C49/08
Inventor 李海涛詹家荣蒋旭亮
Owner SHANGHAI CHEM REAGENT RES INST