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Catalyst for low-temperature efficient treatment of VOCs and preparation method of catalyst

A catalyst and high-efficiency technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem that catalysts cannot convert VOCs at low temperature, and achieve low precious metal loading, good stability, and easy The effect of industrial production

Pending Publication Date: 2021-12-17
常州汇清环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that catalysts in the prior art cannot convert VOCs at low temperatures, the present invention provides a catalyst for efficiently treating VOCs at low temperatures and a preparation method thereof to solve the above problems

Method used

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  • Catalyst for low-temperature efficient treatment of VOCs and preparation method of catalyst
  • Catalyst for low-temperature efficient treatment of VOCs and preparation method of catalyst
  • Catalyst for low-temperature efficient treatment of VOCs and preparation method of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A catalyst for low-temperature and high-efficiency treatment of VOCs, wherein the catalyst is loaded with 0.02% platinum, the molar ratio of Co:Al:Fe in the catalyst is 8:1:0.2, and the precipitant is ammonium bicarbonate. The specific preparation method is as follows:

[0038] (1) Dissolve 1.0 g of chloroplatinic acid hexahydrate with 2 ml of 1 mol / L hydrochloric acid to a volume of 50 ml; then take 130 μL of the solution and dissolve it in 15 ml of ethylene glycol, stir and dissolve to make liquid A;

[0039] (2) Weigh 2.91g of cobalt nitrate hexahydrate and 0.17g of aluminum trichloride, add 80ml of deionized water and stir for 30 minutes, add 0.07g of ferric chloride hexahydrate and continue stirring for 30 minutes until completely dissolved, and make B liquid;

[0040] (3) Transfer liquid B to a three-necked flask with reflux, slowly add 2.4 g of ammonium bicarbonate to liquid B under stirring, after dissolving, heat up to 65°C, and continue stirring for 4 hours; ...

Embodiment 2

[0044] A catalyst for low-temperature and high-efficiency treatment of VOCs, wherein the catalyst is loaded with 0.10% palladium, the molar ratio of Mn:Al:Mg:Ni in the catalyst is 1:1:1:2, and ammonia water is selected as the precipitating agent. The specific preparation method is as follows:

[0045] (1) Dissolve 1.0 g of chloropalladium acid hexahydrate with 1 mol / L hydrochloric acid to a volume of 50 ml; then take 178 μL of the solution and dissolve it in 15 ml of 1,3-butanediol, stir and dissolve to make liquid A;

[0046] (2) Take by weighing 0.62g manganese acetate tetrahydrate, aluminum trichloride of 0.33g, magnesium nitrate of 0.37g, nickel sulfate hexahydrate of 1.31g, add the deionized water of 80ml and stir until completely dissolving, make B liquid;

[0047] (3) Transfer liquid B to a three-necked flask with reflux, add 3ml of 25% ammonia water dropwise to liquid B under stirring, after dissolving, heat up to 90°C, and continue stirring for 4h;

[0048] (4) Contr...

Embodiment 3

[0051] A catalyst for low-temperature and high-efficiency treatment of VOCs, wherein the catalyst is loaded with 0.50% ruthenium, the molar ratio of Ni:Mg:Zn:Al in the catalyst is 8:1:0.5:1, and ammonia water is selected as the precipitating agent. The specific preparation method is as follows:

[0052] (1) Dissolve 1.0 g of ruthenium trichloride with 1 mol / L hydrochloric acid to a volume of 50 ml; then take 187 μL of the solution and dissolve it in 15 ml of 1,3-propanediol, stir and dissolve to make liquid A;

[0053] (2) Take by weighing 2.91g nickel nitrate hexahydrate, the anhydrous magnesium nitrate of 0.19g, the aluminum chloride of the zinc nitrate hexahydrate of 0.18g and 0.17g, the deionized water of 80ml is stirred until dissolving completely, makes B liquid;

[0054] (3) Transfer liquid B to a three-necked flask with reflux, slowly add 1.0 g of ammonium bicarbonate and 1.56 g of urea to liquid B under stirring, and heat up to 120° C. after dissolving;

[0055] (4) ...

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Abstract

The invention relates to a catalyst for low-temperature efficient treatment of VOCs and a preparation method of the catalyst, and belongs to the technical field of chemical catalysts. According to the catalyst, nano noble metal particles are dispersed on a porous carrier; the loading capacity of the noble metal is 0.02-0.5 wt%; the noble metal is selected from at least one of gold, platinum, rhodium, palladium, ruthenium or silver; and the carrier is selected from at least one of oxides of nickel, zirconium, manganese, zinc, cobalt or iron. The prepared catalyst is a porous material and has a rich porous structure, the used raw materials are cheap and easy to obtain, and the loading amount of precious metal is low; and the preparation process is simple and easy for industrial production. The prepared catalyst has the advantages of being high in low-temperature activity, resistant to high-temperature roasting, good in stability, free of secondary pollution, wide in application range, free of special activating treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysts, in particular to a catalyst for low-temperature and high-efficiency treatment of VOCs and a preparation method thereof. Background technique [0002] Volatile organic compounds (VOCs, volatile organic compounds), represented by formaldehyde and benzene, are recognized by the World Health Organization as Class I carcinogens. Formaldehyde is widely used in synthetic resins, sterilization, anti-corrosion and other fields. However, long-term exposure to low-concentration formaldehyde poses a great threat to health. Benzene is an important organic solvent but also a highly toxic chemical. Low concentration of benzene (700-3000ppm) can cause drowsiness, headache and even shock, brief exposure to high concentration of benzene can be fatal, long-term exposure to air containing high concentration of benzene can cause leukemia. VOCs are widely sourced from petrochemical, pharmaceutical, automo...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J37/03B01J37/08B01D53/86B01D53/72
CPCB01J23/8913B01J23/8986B01J23/8953B01J23/002B01J37/031B01J37/082B01D53/8668B01J2523/00B01D2257/708B01J2523/31B01J2523/828B01J2523/842B01J2523/845B01J2523/22B01J2523/72B01J2523/824B01J2523/847B01J2523/27B01J2523/821
Inventor 李建军刘伟
Owner 常州汇清环保科技有限公司
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