A kind of modified ceramsite ozone catalyst, preparation method and application

A catalyst and ceramsite technology, applied in chemical instruments and methods, physical/chemical process catalysts, oxidized water/sewage treatment, etc., can solve the problems of poor ozone catalyst performance and narrow application range, achieve excellent catalytic performance, and facilitate The effect of promotion and improvement of specific surface area

Active Publication Date: 2020-05-22
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Aiming at the problems of poor performance and narrow application range of existing ozone catalysts, the present invention aims to provide a modified ceramsite ozone catalyst and its preparation method

Method used

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  • A kind of modified ceramsite ozone catalyst, preparation method and application
  • A kind of modified ceramsite ozone catalyst, preparation method and application

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Experimental program
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Embodiment 1

[0036] In this embodiment, the commercially available ceramsite ozone catalyst-Cat-O with a particle size of 3-5mm is selected. 3 (purchased from Guangzhou Hualv Environmental Protection Technology Co., Ltd.) 1kg as raw material, the commercially available ceramsite ozone catalyst-Cat-O 3 Its composition in terms of mass percentage is: Mn 0.5%, hydroxyl 0.1%, ceramsite matrix 99.4%; its specific surface area is 15cm 2 / g.

[0037] The preparation steps of modified ceramsite ozone catalyst in the present embodiment are as follows:

[0038] (1) The above-mentioned ceramsite ozone catalyst-Cat-O 3 Mixing with a mixed solution obtained by sulfuric acid with a pH of 3 and manganese sulfate with a mass concentration of 10%, the mass ratio of sulfuric acid and metal sulfate in the mixed solution is 1:1; the pH of the mixed solution is adjusted by sulfuric acid; Impregnating the Mixed Solution with Ceramsite Ozone Catalyst-Cat-O 3 , the impregnation is subject to the immersion of ...

Embodiment 2

[0043] In this embodiment, the commercially available ceramsite ozone catalyst-Cat-O with a particle size of 3-5mm is selected. 3 (purchased from Guangzhou Hualv Environmental Protection Technology Co., Ltd.) 1kg as raw material, the commercially available ceramsite ozone catalyst-Cat-O 3 Its composition in terms of mass percentage is: Mn 0.5%, hydroxyl 0.1%, ceramsite matrix 99.4%; its specific surface area is 15cm 2 / g.

[0044] The preparation steps of modified ceramsite ozone catalyst in the present embodiment are as follows:

[0045] (1) The above-mentioned ceramsite ozone catalyst-Cat-O 3 Mixing with a mixed solution obtained by sulfuric acid with a pH of 5 and titanium sulfate with a mass concentration of 15%, the mass ratio of sulfuric acid and metal sulfate in the mixed solution is 1:1.5; the pH of the mixed solution is adjusted by sulfuric acid; Impregnating the Mixed Solution with Ceramsite Ozone Catalyst-Cat-O 3 , the impregnation is based on the solution immer...

Embodiment 3

[0050] In this embodiment, the commercially available ceramsite ozone catalyst-Cat-O with a particle size of 3-5mm is selected. 3 (purchased from Guangzhou Hualv Environmental Protection Technology Co., Ltd.) 1kg as raw material, the commercially available ceramsite ozone catalyst-Cat-O 3 The components are as follows in terms of mass percentage: 0.5% of Mn, 0.1% of hydroxyl, and 99.4% of ceramsite matrix. The specific surface area is 15cm 2 / g.

[0051] The preparation steps of modified ceramsite ozone catalyst in the present embodiment are as follows:

[0052] (1) The above-mentioned ceramsite ozone catalyst-Cat-O 3 with H at pH 5 2 SO 4 The solution is mixed with a mixed solution obtained by cobalt sulfate with a mass concentration of 20%, and the mass ratio of sulfuric acid to metal sulfate in the mixed solution is 1:1.5; the pH value of the mixed solution is adjusted by sulfuric acid; the mixed solution is impregnated with pottery Granular Ozone Catalyst-Cat-O 3 , ...

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Abstract

The invention discloses a modified ceramsite ozone catalyst and a preparation method and application thereof and belongs to the field of catalyst preparation and application. The catalyst comprises, by mass, 1 to 20% of metals, 0.1 to 1.5% of sulfate, 0.1 to 0.2% of hydroxyl and 80 to 99% of a ceramsite base. The preparation method of the modified ceramsite ozone catalyst comprises: (1) mixing andimpregnating a ceramsite ozone catalyst and a mixed solution of sulfuric acid and its metal salt along with heating and stirring, carrying out immersion and carrying out filtration, and (2) cleaningand calcining the filtered solids to obtain the modified ceramsite ozone catalyst. The modified ceramsite ozone catalyst increases a specific surface area of a ceramsite ozone catalyst carrier, removes metal ions which are not favorable for ozone catalysis, improves the catalytic performance of the catalyst by increasing the specific surface area of the ceramsite ozone catalyst carrier and is suitable for promotion.

Description

technical field [0001] The invention belongs to the field of catalysts, and more specifically relates to a modified ceramsite ozone catalyst, a preparation method and an application. Background technique [0002] Ozone is a strong oxidizing molecule, its oxidizing ability is second only to fluorine and higher than chlorine and potassium permanganate. Based on the strong oxidizing properties of ozone, and it can decompose itself in water in a short time without secondary pollution, so ozone is an ideal green oxidant for water treatment, and has been widely used in the fields of domestic water treatment and industrial water treatment . The effect of ozone oxidation technology depends on the oxidizing ability and usage amount of ozone. Therefore, catalyzing ozone to improve its oxidation efficiency and thereby reducing the cost of advanced wastewater treatment is a hot spot in ozone application research. The introduction of catalyst makes ozone have a stronger oxidation abili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/053B01J27/055C02F1/78C02F103/16C02F103/34
CPCB01J27/053B01J27/055C02F1/725C02F1/78C02F2103/16C02F2103/34C02F2103/343
Inventor 张炜铭韩月潘丙才单超吕路
Owner NANJING UNIV
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