Preparation method of electronic-grade hydrogen peroxide

A hydrogen peroxide, electronic-grade technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, molecular sieve compounds, etc., to meet quality requirements and super corrosion resistance Performance, the effect of enhancing corrosion resistance

Inactive Publication Date: 2021-04-09
QUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the incomplete gas-liquid separation and the carrying of mist liquid in the rectification method, volatile organic compounds will enter the rectificati

Method used

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  • Preparation method of electronic-grade hydrogen peroxide
  • Preparation method of electronic-grade hydrogen peroxide
  • Preparation method of electronic-grade hydrogen peroxide

Examples

Experimental program
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Example Embodiment

[0025]Example 1

[0026]Preparation method of electronic grade dual oxygen, the specific scheme is as follows:

[0027]The industrial hydrogen peroxide is precisely filtered through the nanocomposite film, and then the organic carbon is sieved by an antioxidant medlar molecular sieve, and finally, the nanocomposite film is precisely filtered, and the antioxidant aperture molecule screen is prepared by:

[0028]180 kg of phenyl ketone-based molecular sieve, 150 kg of ethylene glycol phenyl ether, mixed for 1 h, then add 0.5 kg of anhydrous ferrochloride, temperature control 120 ° C, heat preservation reaction for 5 h, after the reaction, filtration, dichloro B After washing molecular sieve, 150 kg of dichloroethane and 1.5 kg of copper chloride were added. After stirring, mixed with 0.1 kg of triphenylphosphine sodium sulfonate salt, controlled temperature 65 ° C, stirred for 8 h, after completion, filtration The molecular sieve was removed by washing with acetone and then washed 3 times with...

Example Embodiment

[0035]Example 2

[0036]Preparation method of electronic grade dual oxygen, the specific scheme is as follows:

[0037]The industrial hydrogen peroxide is precisely filtered through the nanocomposite film, and then the organic carbon is sieved by an antioxidant medlar molecular sieve, and finally, the nanocomposite film is precisely filtered, and the antioxidant aperture molecule screen is prepared by:

[0038]220 kg of phenyl ketone-based molecular sieve, 200 kg of ethylene glycol phenyl ether, mixed for 3 h, then add 2.5 kg of tin tin tin, temperature control 130 ° C, thermal insulation reaction for 8 h, after the reaction, filtration, dichloroethane After washing molecules, 160 kg of dichloroethane was added, and 1.6 kg of copper chloride was added. After stirring, mixed with 0.5 kg of triphenylphosphine sodium sulfonate salt, temperature control 70 ° C, stirred for 6 h, after completion, filtration The molecular sieve was removed by washing with acetone and then washed 3 times with purif...

Example Embodiment

[0045]Example 3

[0046]Preparation method of electronic grade dual oxygen, the specific scheme is as follows:

[0047]The industrial hydrogen peroxide is precisely filtered through the nanocomposite film, and then the organic carbon is sieved by an antioxidant medlar molecular sieve, and finally, the nanocomposite film is precisely filtered, and the antioxidant aperture molecule screen is prepared by:

[0048]260 kg of phenyl ketone-based molecular sieves were mixed with 250 kg of ethylene glycol phenyl ether, mixed for 5 h in stirring, then 5 kg of anhydrous chloride, temperature control temperature 150 ° C, heat preservation reaction for 10 h, after completion, filtration, dichloroethane After washing molecules, 180 kg of dichloroethane was added, and 2.4 kg of copper chloride was added. After stirring, mixed with 0.8 kg of triphenylphosphine sodium sulfonate salt, temperature control 80 ° C, stirred for 12h, after completion, filtration The molecular sieve was removed with acetone and th...

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Abstract

The invention relates to the field of hydrogen peroxide manufacturing, in particular to a preparation method of electronic-grade hydrogen peroxide. The method comprises the following steps: firstly, preliminarily filtering industrial hydrogen peroxide through a nano composite membrane to remove mechanical impurities, and then treating the hydrogen peroxide through an organic resin modified mesoporous molecular sieve adsorption column. According to the invention, the organic resin modified mesoporous molecular sieve polymerizes polystyrene resin on the mesoporous surface of the molecular sieve in situ, and a benzene ring containing two fluoro atoms is modified on the surface of resin, so that the corrosion resistance of the surface structure is enhanced, the inorganic structure of the molecular sieve has super-strong corrosion resistance, a stable skeleton structure is provided for the adsorbent, and the adsorbent is kept stable in a strong oxidation environment and is not oxidized and corroded; finally, after the adsorption is completed, high-purity hydrogen peroxide is produced through filtration. According to the present invention, the content of organic carbon and nitrate in the high-purity hydrogen peroxide is extremely low, and the quality requirement of the electronic industry on the hydrogen peroxide can be met.

Description

technical field [0001] The invention relates to the field of hydrogen peroxide preparation, in particular to a method for preparing electronic grade hydrogen peroxide. Background technique [0002] A small amount of anthraquinone organic matter is produced during the production of hydrogen peroxide by the anthraquinone method. As the operating time of the device increases, the content of anthraquinone organic matter will also increase, and as the operating time of the device increases, the concentration of organic carbon will become higher and higher . The organic carbon in the hydrogen peroxide will seriously affect the quality of the product, [0003] CN111252740A provides a new method for purifying hydrogen peroxide. The method comprises hydrogen peroxide raw material, replacement liquid A, desorption liquid, replacement liquid B, and hydrogen peroxide finished product, which are respectively replaced by the feed pipe of the hydrogen peroxide raw material tank, the feed ...

Claims

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Application Information

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IPC IPC(8): C01B15/013C01B39/02C01B37/00
CPCC01B15/013C01B39/026C01B37/00C01P2002/82C01P2004/60
Inventor 吕亮郑小华徐振祥曾惠明林锋李建光黄振轩
Owner QUZHOU UNIV
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