Catalyst for electrolytic treatment of xylene waste gas and preparation method thereof

A catalyst and xylene technology, applied in the field of environmental pollution waste gas treatment, can solve the problems of large equipment footprint, lower combustion temperature, and high operating costs, and achieve the effects of reducing operating costs, improving current efficiency, and high current utilization.

Active Publication Date: 2020-02-21
浙江恒诺环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The combustion method is to oxidize organic waste gas into CO through high-temperature combustion 2 and H 2 O method, the use of catalysts can effectively reduce the combustion temperature. The combustion method has the characteristics of good treatment effect and no secondary pollution, but its disadvantage is that the operating cost is too high; the photolysis method has the advantages of small equipment occupation, simple operation, and no secondary pollution. Pollution and other characteristics, but its treatment effect is poor, and it can only be used for low-concentration, small air volume exhaust gas; biological method uses microorganisms to degrade pollutants under aerobic conditions, and its characteristics are low operating cost and good treatment effect, but its equipment occupies large area

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  • Catalyst for electrolytic treatment of xylene waste gas and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] A catalyst preparation method for the electrolytic treatment of xylene waste gas described in this example, the specific steps are as follows:

[0025] (1) Add 5ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, stir evenly, add 17.5g of manganese sulfate, and dissolve to obtain manganese sulfate solution; add 3ml of analytical pure glacial acetic acid dropwise to the manganese sulfate solution, stir After uniformity, add 145ml of titanium tetrachloride, and slowly add 15ml of ultrapure water dropwise under rapid stirring at a temperature of 40°C to obtain a transparent and stable gel solution;

[0026] (2) Using CTAB as the structure-directing agent, using ultrapure water at 50°C as the solvent, and Mn:CTAB molar ratio of 1:20, prepare a CTAB solution with the same volume as the titanium sol solution, which is the template sol solution;

[0027] (3) Slowly add the templating agent sol solution into the gel solution prepared in step (1) ...

Embodiment 2

[0030] A catalyst preparation method for the electrolytic treatment of xylene waste gas described in this example, the specific steps are as follows:

[0031] (1) Add 4ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, stir evenly, add 21g of manganese chloride, and dissolve to obtain a manganese chloride solution; add dropwise 2.5ml of analytical pure ice to the manganese chloride solution Acetic acid, after stirring evenly, add 160ml of butyl titanate, and slowly add 15ml of ultrapure water dropwise under rapid stirring at a temperature of 40°C to obtain a transparent and stable gel solution;

[0032] (2) Using CTAB as a structure-directing agent, using ultrapure water at 50°C as a solvent, and having a Mn:CTAB molar ratio of 1:50, prepare a CTAB solution with the same volume as the titanium sol solution, which is the template sol solution;

[0033] (3) Slowly add the templating agent sol solution to the gel solution prepared in step (1) at a...

Embodiment 3

[0036] A catalyst preparation method for the electrolytic treatment of xylene waste gas described in this example, the specific steps are as follows:

[0037] (1) Add 6ml of 12mol / L concentrated hydrochloric acid dropwise to 840ml of absolute ethanol, stir evenly, add 20g of manganese sulfate, and dissolve to obtain manganese sulfate solution; add 2ml of analytical pure glacial acetic acid to the manganese sulfate solution, and stir well Then add 154ml of butyl titanate, and slowly add 13ml of ultrapure water dropwise under rapid stirring at 40°C to obtain a transparent and stable gel solution;

[0038](2) Using CTAB as the structure-directing agent, using ultrapure water at 50°C as the solvent, and Mn:CTAB molar ratio of 1:35, prepare a CTAB solution with the same volume as the titanium sol solution, which is the template sol solution;

[0039] (3) Slowly add the templating agent sol solution to the gel solution prepared in step (1) at a stirring speed of 130 rad / min, and rea...

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Abstract

The invention relates to a catalyst used for treating xylene exhaust gas via electrolytic method. The catalyst is a nano-grade Mn / Ti composite material formed via eutectic growth of MnO2 and TiO2 two metal oxides. A preparation method comprises following steps: 1, a gel solution is prepared; 2, a template agent sol solution is prepared; 3, the gel solution is reacted with the template agent sol solution so as to obtain a catalyst precursor; and 4, the catalyst precursor is subjected to grinding molding so as to obtain the catalyst. According to the nano Mn / Ti double metal composite catalyst, the template agent is used for structure guiding, growth of metal crystals in a certain skeleton structure is realized; the obtained catalyst possesses a certain space structure, and is excellent in absorption performance; the main ingredients in the catalyst are taken as the active ingredients; and the catalyst is high in catalytic activity.

Description

technical field [0001] The invention belongs to the field of environmental pollution waste gas treatment, and in particular relates to a catalyst for electrolytic treatment of xylene waste gas and a preparation method thereof. Background technique [0002] Xylene waste gas is a typical volatile organic compound (VOCs), which mainly comes from chemical industries such as spray paint, printing, coatings, and pharmaceuticals, as well as places such as garbage, sewage, and waste pools. Its strong volatility makes this kind of gas volatilize into the atmosphere in a large amount during the production and use process, which can stimulate the sensory organs of human body and animals, and even cause varying degrees of toxicity to the nervous system, hematopoietic function, reproductive organs and other organs. influences. Therefore, the treatment of p-xylene waste gas is very necessary. [0003] At present, the technologies for treating xylene waste gas in industry are mainly divi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01J35/10C30B21/02C30B29/16B01D53/86B01D53/72
CPCB01D53/8668B01J23/002B01J23/34B01J35/0033B01J35/10C30B21/02C30B29/16
Inventor 秦华达
Owner 浙江恒诺环保科技有限公司
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