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Application and method of a kind of solid superacid for catalyzing hydrogen peroxide/ozone

A technology of solid superacids and uses, applied in chemical instruments and methods, oxidized water/sewage treatment, chemical/physical processes, etc., can solve the problems of little difference in oxidation efficiency, loss of titanium active sites, loss of titanium ions, etc. Achieve the effect of low cost, strong catalytic activity and good application prospect

Active Publication Date: 2019-10-11
HANGZHOU CHENGJIE ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some work studies have shown that the oxidation efficiency of ozone in an acidic system (pH=3.0-5.0) can be greatly improved by adding titanium-containing Lewis acid, and it is found that adding Ti(Ⅳ) can effectively increase the H 2 o 2 / O 3 Oxidation efficiency under acidic conditions, but the deficiency of this system is the loss of titanium ions
Different immobilized forms of Ti(Ⅳ) have certain catalytic activity in acidic environments, but the oxidation efficiency of different lattice Ti(Ⅳ) structures has little difference. For systems with pH<2.0, there is loss of titanium active sites or obvious activity. reduce

Method used

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  • Application and method of a kind of solid superacid for catalyzing hydrogen peroxide/ozone
  • Application and method of a kind of solid superacid for catalyzing hydrogen peroxide/ozone
  • Application and method of a kind of solid superacid for catalyzing hydrogen peroxide/ozone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] use as figure 1 As shown in the device, configure 4 cups of 500mL acetic acid solution containing 100mg / L, respectively add solid superacid catalyst in an amount of 0.4g / L, then add sulfuric acid to adjust the pH to 0, 0.5, 1.0, 1.5, and then add Into the ozone reactor, add hydrogen peroxide at a concentration of 100mg / L, and pass through ozone.

[0033] The dosage of ozone is 47.6mg / min. At the beginning of the experiment, samples were taken for detection after 30 minutes of reaction.

[0034] Detection method: Acetic acid adopts ThermoFisher Dionex Ultimate3000 high performance liquid chromatography.

[0035] The effect after water sample treatment for 30 minutes is shown in Table 1:

[0036] Table 1

[0037]

Embodiment 2

[0039] use as figure 1 The device shown is equipped with 4 cups of 500mL acetic acid solution containing 100mg / L, and the dosage of solid superacid catalyst is 0.4g / L, and then sulfuric acid is added to adjust the pH to 2, 3, 4, 5, and then Add it into the ozone reactor, add hydrogen peroxide at a concentration of 100mg / L, and pass through ozone.

[0040] The dosage of ozone is 47.6mg / min. At the beginning of the experiment, samples were taken after 60 minutes of reaction.

[0041] Detection method: Acetic acid adopts ThermoFisher Dionex Ultimate3000 high performance liquid chromatography.

[0042] The effect after water sample treatment for 30 minutes is shown in Table 2:

[0043] Table 2

[0044]

Embodiment 3

[0046] use as figure 1 The device shown is equipped with 5 cups of 500mL acetic acid solution containing 100mg / L, and the dosage of solid superacid catalyst is 0.05g / L, 0.1g / L, 0.4g / L, 1g / L, 2g / L , and then add sulfuric acid to adjust the pH to 1.5, then add it to the ozone reactor, add hydrogen peroxide at a concentration of 100mg / L, and pass through ozone.

[0047] The dosage of ozone is 47.6mg / min. At the beginning of the experiment, samples were taken after 60 minutes of reaction.

[0048] Detection method: Acetic acid adopts ThermoFisher Dionex Ultimate3000 high performance liquid chromatography.

[0049] The effect after water sample treatment for 60 minutes is shown in Table 3:

[0050] table 3

[0051]

[0052]

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Abstract

The invention discloses a solid super acid (SO 4 2‑ / Fe 2 O 3 / ZrO 2 ) Use and method of catalytic hydrogen peroxide / ozone in treating acidic wastewater; SO in the technology of the present invention 4 2‑ / Fe 2 O 3 / ZrO 2 and H 2 O 2 It has a synergistic effect on catalytic ozone oxidation to remove organic matter in water; the technology of the present invention has a high removal rate of acetic acid under strong acidic conditions (pH<2.0), overcoming the problem of H 2 O 2 / O 3 The system has the disadvantage that the oxidation efficiency is significantly reduced when the pH is <5.0. It has the advantages of simple operation, low cost, and can effectively remove organic matter such as acetic acid in acidic solutions. It has excellent application prospects.

Description

technical field [0001] The invention relates to a solid superacid catalyst, in particular to a SO 4 2- / Fe 2 o 3 / ZrO 2 A solid superacid catalyst and its use and treatment method for treating acidic wastewater with catalytic hydrogen peroxide / ozone. Background technique [0002] The oxidation ability of ozone in water treatment is very strong. The oxidation reduction potential of ozone is 2.07V, second only to fluorine, and its oxidation ability is 1.25 times that of chlorine. Although simple ozone oxidation can remove organic matter to a certain extent, it is difficult for ozone to further oxidize the oxidized small molecular substances, so pure ozone oxidation has certain limitations on the mineralization of organic matter. Therefore, a lot of research has been done to improve the limitations of ozone. In terms of technology convenience and application maturity, H 2 o 2 / O 3 With the best research prospects. However, under acidic conditions (pH<6.0) H 2 o 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/053B01J35/10C02F1/72C02F1/78
CPCC02F1/722C02F1/725C02F1/78B01J27/053B01J35/61
Inventor 童少平洪夏萍项丰云曹利刚朱显跃
Owner HANGZHOU CHENGJIE ENVIRONMENTAL PROTECTION
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