A method for improving the quality of industrial grade hydrogen peroxide

A hydrogen peroxide, industrial-grade technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of excessive metal ion impurities, etc. problem, to achieve the effect of improving quality

Active Publication Date: 2016-08-24
SHANGHAI CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a method for improving the quality of industrial-grade hydrogen peroxide, using an asymmetric amide extractant to extract, reduce or remove metal ion impurities in industrial-grade hydrogen peroxide, to overcome the excessive Insufficiency of Excessive Metal Ion Impurity in Hydrogen Oxide Extraction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 100g of N-methyl-N-octyloctylamide extractant to 1000ml of 35% industrial hydrogen peroxide, stir at room temperature for 8 hours, transfer to a liquid separator to stand for stratification, collect the lower layer, and obtain the quality Elevated hydrogen peroxide. Wherein, the N-methyl-N-octyl octanamide extractant waste liquid containing metal ion impurities in the upper layer can be recycled and reused.

[0020] The hydrogen peroxide obtained above was analyzed and detected, and the detection results are shown in Table 1 below.

[0021] Table 1

[0022] project

Embodiment 2

[0024] Add 120g of N-methyl-N-octyldecylamide extractant to 1000ml of 35% industrial hydrogen peroxide, stir at room temperature for 10 hours, transfer to a liquid separator to stand for stratification, collect the lower layer, and obtain the quality Elevated hydrogen peroxide. Wherein, the N-methyl-N-octyldecylamide extractant waste liquid containing metal ion impurities in the upper layer can be recycled and reused.

[0025] The hydrogen peroxide obtained above was analyzed and detected, and the detection results are shown in Table 2 below.

[0026] Table 2

[0027] project

Embodiment 3

[0029] Add 150g of N-methyl-N-octyldodecamide extractant to 1000ml of 35% industrial hydrogen peroxide, stir at room temperature for 12 hours, transfer to a liquid separator to stand for stratification, and collect the lower layer to obtain Enhanced Hydrogen Peroxide. Wherein, the N-methyl-N-octyldodecanamide extractant waste liquid containing metal ion impurities in the upper layer can be recycled and reused.

[0030] The hydrogen peroxide obtained above was analyzed and detected, and the detection results are shown in Table 3 below.

[0031] table 3

[0032] project

[0033] Can find out from above-mentioned table 1, table 2, table 3 data: adopt the hydrogen peroxide that the inventive method obtains, total organic carbon is less than 10ppm, and the removal rate of metal ion impurity such as Cd, Pb, Cu, Au etc. is greater than 90%. Therefore, the method of the present invention effectively solves the problem that the content of metal ion impurities exceeds the st...

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Abstract

The invention discloses a method for improving the quality of industrial grade hydrogen peroxide. The industrial grade hydrogen peroxide is used as a raw material; an asymmetric amide extraction agent is added for extraction, so that metal ion impurities are reduced or removed from the industrial grade hydrogen peroxide; and therefore, the hydrogen peroxide with improved quality is obtained. According to the hydrogen peroxide obtained by the method, the total organic carbon is less than 10 ppm, and the removal rate of the metal ion impurities such as Cd, Pb, Cu and Au is over 90 percent. By the method, the problem that the content of the metal ion impurities is overproof when the industrial grade hydrogen peroxide is used as the raw material for preparing the high-quality hydrogen peroxide is solved, and the quality of a product is stable; and furthermore, after being recycled, waste liquid of the asymmetric amide extraction agent containing the metal ion impurities is subjected to acidic washing, alkaline wash and salt water washing until the waste liquid is neutral and is decompressed and distilled so as to be reused.

Description

technical field [0001] The invention relates to a method for improving the quality of industrial-grade hydrogen peroxide, in particular to a method for extracting and improving the quality of industrial-grade hydrogen peroxide by using an asymmetric amide extractant to remove metal ion impurities. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material and fine chemical product. Electronic-grade hydrogen peroxide is a very important electronic chemical in the electronics industry. It is widely used in large-scale integrated circuits (ICs), thin-film liquid crystal displays (TFT-LCDs), semiconductors and other microelectronics industries. It has broad prospects for development and utilization. [0003] The production of ultra-pure hydrogen peroxide usually uses industrial-grade hydrogen peroxide as raw material. In order to ensure the quality of ultra-pure hydrogen peroxide and the stability of production, it is required that the conten...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C01B15/013
Inventor宋振李海涛蒋旭亮
OwnerSHANGHAI CHEM REAGENT RES INST