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Preparation method of catalyst for catalytic combustion of VOCs (Volatile Organic Compounds) and product thereof

A catalytic combustion and catalyst technology, which is applied in the field of VOCs treatment, can solve the problems of expensive precious metals and single performance, and achieve the effect of simple preparation method, excellent product performance and improved crystal form

Pending Publication Date: 2022-07-22
HUNAN KUANGCHU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen from the above that although the catalyst supported by noble metal has excellent catalytic combustion performance, the price of noble metal is relatively expensive and the performance is relatively single.

Method used

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  • Preparation method of catalyst for catalytic combustion of VOCs (Volatile Organic Compounds) and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method for catalytic combustion of VOCs catalyst is characterized in that: comprising the following steps:

[0027] (1) the gallium nitrate of 5mmol and the trisodium citrate of 1.5mmol are added in the mixed solution of 100mL ethanol and water, wherein the volume ratio of ethanol and water is 1:1, magnetic stirring at room temperature, described stirring speed is 350rpm , stirring for 1 h, poured into the hydrothermal reaction kettle after mixing evenly, and then reacted at 190 ° C for 20 h. After the reaction was completed, the obtained suspension was filtered after the reaction kettle was cooled, washed with ethanol, centrifuged and filtered for 3 times, and then in Drying at 100°C for 13h, then calcining at 400°C for 30h to obtain gallium oxide;

[0028] (2) adding gallium oxide to the mixture containing copper nitrate and cerium nitrate, 1g urea, 4g polyvinylpyrrolidone, 55mL ethanol and 55mL deionized water and stirring, the stirring speed is 350rpm,...

Embodiment 2

[0030] A preparation method for catalytic combustion of VOCs catalyst, comprising the following steps:

[0031] (1) the gallium acetate of 5mmol and the sodium acetate of 2mmol are added in the mixed solution of 100mL ethanol and water, wherein the volume ratio of ethanol and water is 1:1, magnetic stirring at room temperature, described stirring speed is 400rpm, stirring time 0.5h, after mixing evenly, poured into the hydrothermal reaction kettle, and then reacted at 200°C for 12h. After the reaction was completed, after the reaction kettle was cooled, the obtained suspension was filtered, washed with ethanol, centrifuged and filtered 3 times, and then at, 120 Drying at ℃ for 12h, then calcining at 500℃ for 10h to obtain gallium oxide;

[0032](2) adding gallium oxide to the mixture containing copper chloride and cerium acetate, 3g urea, 5g polyvinylpyrrolidone, 60mL ethanol and 60mL deionized water and stirring, the stirring speed is 400rpm, the stirring time is 1h, and the ...

Embodiment 3

[0034] A preparation method for catalytic combustion of VOCs catalyst, comprising the following steps:

[0035] (1) the gallium chloride of 5mmol and the trisodium citrate of 1mmol are added in the mixed solution of 100mL ethanol and water, wherein the volume ratio of ethanol and water is 1:1; Magnetic stirring at room temperature, described stirring speed is 300rpm , stirring time for 1h, poured into the hydrothermal reaction kettle after mixing evenly, and then reacted at 180 ℃ for 24h, after the reaction was completed, after the reaction kettle was cooled, the obtained suspension was filtered, washed with ethanol, centrifuged and filtered for 3 times, and then in , dried at 80 °C for 14 h, and then calcined at 300 °C for 40 h to obtain gallium oxide;

[0036] (2) adding gallium oxide to the mixture containing copper acetate and cerium chloride, 1g urea, 3g polyvinylpyrrolidone, 50mL ethanol and 50mL deionized water and stirring, the stirring speed is 300rpm, the stirring ti...

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Abstract

The invention discloses a preparation method of a catalyst for catalytic combustion of VOCs (Volatile Organic Compounds) and a product thereof. According to the catalyst, gallium oxide is prepared through a hydrothermal method, then a copper source, a cerium source, urea, polyvinylpyrrolidone and other substances are added, a hydrothermal reaction is conducted again, the copper and cerium co-modified gallium oxide catalyst is obtained, the crystal form of the catalyst can be remarkably improved through the two-step hydrothermal method, and the specific surface area of the catalyst is increased; through modification of copper and cerium, the catalytic combustion performance of gallium oxide can be remarkably improved, and purification of VOCs is effectively improved, so that the catalyst is an ideal material for treating VOCs.

Description

technical field [0001] The invention relates to the field of VOCs treatment, in particular to a preparation method of a catalyst for catalytic combustion of VOCs and a product thereof. Background technique [0002] Volatile organic compounds (VOCs) refer to organic compounds with a saturated vapor pressure greater than 70Pa at room temperature and a boiling point below 260°C under normal pressure, including alkanes, aromatic hydrocarbons, aromatic hydrocarbons, olefins, alcohols, aldehydes, Ketones, halogenated hydrocarbons, etc., the common emission sources in daily life are building materials, decoration materials, adhesives for furniture, kitchen fumes and vehicle exhaust emissions; the main common sources in industry are chemical and petrochemical industry waste gas, electronic Industry cleaning agents, printing industry, production and use of paints and coatings, exhaust gas from industrial processes such as power plant boiler exhaust, most VOCs are toxic and odorous, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83F23G7/07
CPCB01J23/83F23G7/07F23G2209/14Y02A50/20
Inventor 肖坤坚袁愈亮
Owner HUNAN KUANGCHU TECH CO LTD
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