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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 rectification system with hydrogen peroxide vapor, so the purity is generally not very high, especially the organic compounds are easy to volatilize into the rectification system

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
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of electronic grade hydrogen peroxide, its specific scheme is as follows:

[0027] Firstly, the industrial hydrogen peroxide is precisely filtered through a nanocomposite membrane, then the organic carbon is adsorbed through an anti-oxidation mesoporous molecular sieve, and finally it is precisely filtered through a nanocomposite membrane. It is characterized in that the preparation method of the antioxidation mesoporous molecular sieve is as follows:

[0028] Mix 180kg of phenyl ketone-based mesoporous molecular sieves and 150kg of ethylene glycol phenyl ether for 1 hour, then add 0.5kg of anhydrous ferric chloride, control the temperature at 120°C, and keep warm for 5 hours. After the reaction, filter and dichloroethyl Add 150kg dichloroethane and 1.5kg cuprous chloride after washing the molecular sieve with alkane, stir and mix evenly, add 0.1kg triphenylphosphine triisosulfonic acid sodium salt, control the temperature at 65°C, stir and r...

Embodiment 2

[0036] A kind of preparation method of electronic grade hydrogen peroxide, its specific scheme is as follows:

[0037] Firstly, the industrial hydrogen peroxide is precisely filtered through a nanocomposite membrane, then the organic carbon is adsorbed through an anti-oxidation mesoporous molecular sieve, and finally it is precisely filtered through a nanocomposite membrane. It is characterized in that the preparation method of the antioxidation mesoporous molecular sieve is as follows:

[0038] Mix 220kg of phenyl ketone-based mesoporous molecular sieves and 200kg of ethylene glycol phenyl ether for 3 hours, then add 2.5kg of tin tetrachloride, control the temperature at 130°C, and keep warm for 8 hours. After the reaction, filter and dichloroethane After washing the molecular sieve, add 160kg of dichloroethane, add 1.6kg of cuprous chloride, stir and mix evenly, add 0.5kg of triphenylphosphine triisosulfonic acid sodium salt, control the temperature at 70°C, stir and react fo...

Embodiment 3

[0046] A kind of preparation method of electronic grade hydrogen peroxide, its specific scheme is as follows:

[0047] Firstly, the industrial hydrogen peroxide is precisely filtered through a nanocomposite membrane, then the organic carbon is adsorbed through an anti-oxidation mesoporous molecular sieve, and finally it is precisely filtered through a nanocomposite membrane. It is characterized in that the preparation method of the antioxidation mesoporous molecular sieve is as follows:

[0048] Mix 260kg of phenyl ketone-based mesoporous molecular sieve with 250kg of ethylene glycol phenyl ether for 5 hours, then add 5kg of anhydrous zinc chloride, control the temperature at 150°C, and keep it warm for 10 hours. After the reaction, filter and dichloroethane After washing the molecular sieve, add 180kg dichloroethane, add 2.4kg cuprous chloride, stir and mix evenly, add 0.8kg triphenylphosphine triisosulfonic acid sodium salt, control the temperature at 80°C, stir and react for...

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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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