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Preparation method of a highly dispersed ruthenium-based catalyst and its application in the purification of chlorine-containing volatile organic pollutants

A ruthenium-based catalyst, highly dispersed technology, applied in the field of air pollution control, can solve environmental and human health hazards and other problems, achieve low-temperature catalysis, excellent low-temperature reducible performance, and avoid the effects of by-products

Active Publication Date: 2022-02-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air pollution has caused great harm to the environment and human health, and reports of respiratory diseases caused by smog are common

Method used

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  • Preparation method of a highly dispersed ruthenium-based catalyst and its application in the purification of chlorine-containing volatile organic pollutants
  • Preparation method of a highly dispersed ruthenium-based catalyst and its application in the purification of chlorine-containing volatile organic pollutants
  • Preparation method of a highly dispersed ruthenium-based catalyst and its application in the purification of chlorine-containing volatile organic pollutants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 Preparation of highly dispersed ruthenium-based catalytic materials by multi-phase co-precipitation method, thermal oxidation method, in-situ photochemical reduction deposition method combined with thermal reduction

[0040] Dissolve 0.4g of potassium permanganate in 500mL of deionized water, stir at 600r / min for 20min at room temperature until completely dissolved and form a clear and transparent solution, and first heat the solution to 60 degrees; then add dropwise Completely dissolved 30mL containing 2.0g of cobalt sulfate solution, after the dropwise addition is completed, stir for 2 hours to promote the solution to fully react, then raise the mixed solution system to 80 degrees and continue to stir for 2 hours, then let the mixed solution naturally cool and stand 6h, then the solution was filtered to obtain a black solid powder.

[0041] The prepared black powder was redispersed in deionized aqueous solution, and a certain amount of precious metal source ...

Embodiment 2

[0042] Example 2 Activity Test and Evaluation of Catalytic Degradation of 1,2-Dichloroethane by Highly Dispersed Ruthenium-Based Catalytic Material

[0043] Get the solid powder tableting obtained in Example 1, sieve (40-60 mesh), and accurately take by weighing 0.5g catalyzed material after sieving with 1,2-dichloroethane as probe gas, the reactant The concentration was controlled at 1000ppm, the reaction space velocity was 42000mL / g h and the oxygen concentration was 21%. °C, 330 °C and 340 °C) catalytic activity, and the reaction products were monitored and analyzed by gas chromatography.

Embodiment 3

[0044] Example 3 Stability Test of Catalytic Degradation of 1,2-Dichloroethane by Highly Dispersed Ruthenium-Based Catalytic Material

[0045] Get the solid powder obtained in Example 1 and press into tablets, sieve (40-60 mesh), accurately weigh 0.5g of the catalytic material after sieving and place it in the fixed bed of the evaluation device, and use 1,2-dichloroethane Alkanes are used as probe gas, the concentration of reactants is controlled at 1000ppm, and the reaction space velocity is 42000h -1 And the oxygen concentration is 21%, the catalytic reaction activity of the catalyst at 300° C. is continuously tested, and the reaction product is monitored and analyzed by gas chromatography.

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PUM

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Abstract

The invention discloses a preparation method of a highly dispersed ruthenium-based catalyst and its application in the purification of chlorine-containing volatile organic pollutants. The aqueous solution of cobalt sulfate is added to the aqueous solution of potassium permanganate, and filtered after reaction to obtain black solid powder. ; Add the black solid powder into water, then add the precious metal source solution dropwise, stir evenly in the dark, add ethylene glycol, stir evenly, add glyoxal, stir evenly, under nitrogen protection, stir under light for 30-60min, and Heating to 60-80°C for reaction and then roasting to obtain a ruthenium-based dispersed catalyst. The material preparation method of the invention is simple, economical, and easy to operate, and can effectively degrade CVOCs under low temperature conditions, reduce energy consumption in the reaction process, realize economic and environmental protection catalytic concept, and have good industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and relates to a preparation method of a highly dispersed ruthenium-based catalyst and its application in purifying chlorine-containing volatile organic pollutants. Background technique [0002] In recent years, the rapid development of my country's industry has brought a series of environmental pollution problems. The problem of air pollution is particularly prominent. Common air pollution problems include acid rain, photochemical smog, ozone layer destruction, and smog formation. Air pollution has caused great harm to the environment and human health, and reports of respiratory diseases caused by smog are common. The composition of haze is very complex, consisting of nearly a hundred kinds of compound particles that are harmful to health. Among them, fine particles (PM2.5) with a particle size of less than 2.5 μm can directly enter and adhere to the human respiratory tract and al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J37/03B01J37/12B01J37/34B01J35/10B01D53/70B01D53/86
CPCB01J23/8986B01J37/03B01J37/12B01J37/344B01J35/0066B01J23/002B01J35/1004B01D53/8662B01J2523/00B01D2257/2064B01D2257/708B01D2258/02B01D2258/06B01J2523/72B01J2523/821B01J2523/845
Inventor 何炽田明姣姜泽宇李璐马牧笛
Owner XI AN JIAOTONG UNIV
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